THREE CITIES FUND II LP
SC 13D, 1999-01-04
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<PAGE>   1
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                           --------------------------


                                  SCHEDULE 13D
                    UNDER THE SECURITIES EXCHANGE ACT OF 1934

                           --------------------------


                                    COHR INC.
                                (Name of Issuer)

                           --------------------------


                    COMMON STOCK, PAR VALUE, $0.01 PER SHARE
                         (Title of Class of Securities)

                           --------------------------

                                    192567105
                                 (Cusip Number)

                           --------------------------

                            DAVID W. BERNSTEIN, ESQ.
                               ROGERS & WELLS LLP
                                 200 PARK AVENUE
                            NEW YORK, NEW YORK 10166
                                 (212) 878-8000
                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                           --------------------------


                                DECEMBER 24, 1998
             (Date of event which requires filing of this statement)





If the filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box       / /.


                               Page 1 of 13 Pages
                            Exhibit Index at Page 9
<PAGE>   2
CUSIP No. 192567105                   13D                     Page 2 of 13 Pages

================================================================================
    1.       NAME OF REPORTING PERSON
             S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON

                           THREE CITIES FUND II, L.P.
- --------------------------------------------------------------------------------
    2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                         (a) / /
                                                                         (b) /X/
- --------------------------------------------------------------------------------
    3.       SEC USE ONLY

- --------------------------------------------------------------------------------
    4.       SOURCES OF FUNDS
                      OO - Partner Contributions
- --------------------------------------------------------------------------------
    5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
             TO ITEM 2(d) OR 2(e)
                                                                             / /
- --------------------------------------------------------------------------------
    6.       CITIZENSHIP OR PLACE OF ORGANIZATION

                      DELAWARE
- --------------------------------------------------------------------------------
       NUMBER OF            7.    SOLE VOTING POWER

         UNITS                                 0
                          ------------------------------------------------------
      BENEFICIALLY          8.    SHARED VOTING POWER

        OWNED BY                               0
                          ------------------------------------------------------
          EACH              9.    SOLE DISPOSITIVE POWER

       REPORTING                               0
                          ------------------------------------------------------
      PERSON WITH          10.    SHARED DISPOSITIVE POWER

                                               0
- --------------------------------------------------------------------------------
    11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                                               3,085,425
- --------------------------------------------------------------------------------
    12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
             SHARES
                                                                             / /
- --------------------------------------------------------------------------------
    13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                                               48.3%
- --------------------------------------------------------------------------------
    14.
             TYPE OF REPORTING PERSON

                                               PN
================================================================================




                                       2
<PAGE>   3
CUSIP No. 192567105                    13D                    Page 3 of 13 Pages

================================================================================
    1.       NAME OF REPORTING PERSON
             S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON

                           THREE CITIES RESEARCH, INC.
- --------------------------------------------------------------------------------
    2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                         (a) / /
                                                                         (b) /X/
- --------------------------------------------------------------------------------
    3.       SEC USE ONLY

- --------------------------------------------------------------------------------
    4.       SOURCES OF FUNDS
                      Not Applicable
- --------------------------------------------------------------------------------
    5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
             TO ITEM 2(d) OR 2(e)
                                                                             / /
- --------------------------------------------------------------------------------
    6.       CITIZENSHIP OR PLACE OF ORGANIZATION

                      DELAWARE
- --------------------------------------------------------------------------------
       NUMBER OF            7.    SOLE VOTING POWER

         UNITS                                 3,085,425
                          ------------------------------------------------------
      BENEFICIALLY          8.    SHARED VOTING POWER

        OWNED BY                               0
                          ------------------------------------------------------
          EACH              9.    SOLE DISPOSITIVE POWER

       REPORTING                               3,085,425
                          ------------------------------------------------------
      PERSON WITH          10.    SHARED DISPOSITIVE POWER

                                               0
- --------------------------------------------------------------------------------
    11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                                               3,085,425
- --------------------------------------------------------------------------------
    12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
             SHARES
                                                                             / /
- --------------------------------------------------------------------------------
    13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                                               48.3%
- --------------------------------------------------------------------------------
    14.      TYPE OF REPORTING PERSON

                                               CO
================================================================================




                                       3
<PAGE>   4
CUSIP No. 192567105                    13D                    Page 4 of 13 Pages

================================================================================
    1.       NAME OF REPORTING PERSON
             S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON

                          THREE CITIES OFFSHORE II C.V.
- --------------------------------------------------------------------------------
    2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                         (a) / /
                                                                         (b) /X/
- --------------------------------------------------------------------------------
    3.       SEC USE ONLY

- --------------------------------------------------------------------------------
    4.       SOURCES OF FUNDS
                      00 - Partner Contributions
- --------------------------------------------------------------------------------
    5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
             TO ITEM 2(d) OR 2(e)
                                                                             / /
- --------------------------------------------------------------------------------
    6.       CITIZENSHIP OR PLACE OF ORGANIZATION

             NETHERLANDS ANTILLES
- --------------------------------------------------------------------------------
       NUMBER OF            7.    SOLE VOTING POWER

         UNITS                                 0
                          ------------------------------------------------------
      BENEFICIALLY          8.    SHARED VOTING POWER

        OWNED BY                               0
                          ------------------------------------------------------
          EACH              9.    SOLE DISPOSITIVE POWER

       REPORTING                               0
                          ------------------------------------------------------
      PERSON WITH          10.    SHARED DISPOSITIVE POWER

                                               0
- --------------------------------------------------------------------------------
    11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                                               3,085,425
- --------------------------------------------------------------------------------
    12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
             SHARES
                                                                             / /
- --------------------------------------------------------------------------------
    13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                                               48.3%
- --------------------------------------------------------------------------------
    14.      TYPE OF REPORTING PERSON

                                               PN
================================================================================




                                       4
<PAGE>   5
ITEM 1. SECURITY AND ISSUER.

         (a)      Class of Securities: Common Stock, par value $0.01 per share
                  ("Common Stock").

         (b)      Issuer:  COHR Inc. ("Issuer")
                  21540 Plummer Street
                  Chatsworth, California 91311

ITEM 2. IDENTITY AND BACKGROUND.

         (a)-(c) The persons (the "Reporting Persons") filing this statement are
Three Cities Fund II, L.P., a Delaware limited partnership ("Fund II"), Three
Cities Offshore II C.V., a Netherlands Antilles partnership ("Offshore II") and
Three Cities Research, Inc., a Delaware corporation ("Research"). Fund II and
Offshore II are collectively referred to herein as the "Three Cities Funds."

         FUND II

         Fund II is a Delaware limited partnership, formed to invest in
securities to be selected by its investment committee. The principal business
address of Fund II, which also serves as its principal office, is c/o Three
Cities Research, Inc., 650 Madison Avenue, New York, New York 10022. Pursuant to
Instruction C to Schedule 13D of the Securities Exchange Act of 1934, as amended
(the "Exchange Act"), information with respect to TCR Associates, L.P. ("TCR
Associates"), the sole general partner of Fund II, is set forth below.

         TCR Associates. TCR Associates is a Delaware limited partnership, the
principal business of which is serving as the sole general partner of Fund II.
The principal business address of TCR Associates, which also serves as its
principal office, is c/o Three Cities Research, Inc., 650 Madison Avenue, New
York, New York 10022. Research is the sole general partner of TCR Associates.

         RESEARCH

         Research is a Delaware corporation which serves as the sole general
partner of TCR Associates. Research is also the advisor to the Three Cities
Funds and pursuant to a management agreement with each Three Cities Fund,
Research has voting and dispositive power over the shares of Common Stock
reported as beneficially owned by the Three Cities Funds on this Schedule 13D.
The principal business address of Research is 650 Madison Avenue, New York, NY
10022. Pursuant to Instruction C to Schedule 13D of the Exchange Act, the name,
residence or business address, and present principal occupation or employment of
each executive officer and director of Research is as follows:

<TABLE>
<CAPTION>
                                                 Residence or                           Principal Occupation
Name                                           Business Address                            or Employment
- ----                                           ----------------                            -------------
<S>                                  <C>                                    <C>    
Willem F.P. de Vogel                 c/o Three Cities Research, Inc.        President and a Director of Three Cities
                                     650 Madison Avenue                     Research, Inc.
                                     New York, NY  10022

Thomas G. Weld                       c/o Three Cities Research, Inc.        Treasurer and a Director of Three Cities
                                     650 Madison Avenue                     Research, Inc.
                                     New York, NY  10022

J. William Uhrig                     c/o Three Cities Research, Inc.        Secretary and a Director of Three Cities
                                     650 Madison Avenue                     Research, Inc.
                                     New York, NY  10022
</TABLE>


         OFFSHORE II

         Offshore II is a Netherlands Antilles partnership, formed to invest in
securities to be selected by its investment committee. The principal business
address of Offshore II, which also serves as its principal office, is c/o Three
Cities Research, Inc., 650 Madison Avenue, New York, New York 10022. Pursuant to


                                       5
<PAGE>   6
Instruction C to Schedule 13D of the Exchange Act, information with respect to
TCR Offshore Associates, L.P. ("TCR Offshore"), the sole general partner of
Offshore II, is set forth below.

         TCR Offshore. TCR Offshore is a Netherlands Antilles limited
partnership, the principal business of which is serving as the general partner
of Offshore II. The principal business address of TCR Offshore, which also
serves as its principal office, is c/o Three Cities Research, Inc., 650 Madison
Avenue, New York, New York 10022. Pursuant to Instruction C to Schedule 13D of
the Exchange Act, information with respect to Three Cities Associates, N.V.
("TCA N.V."), the sole general partner of TCR Offshore, is set forth below.

         TCA, N.V. TCA, N.V. is a Netherlands Antilles corporation, the
principal business of which is serving as the general partner of TCR Offshore.
The principal business address of TCA, N.V., which also serves as its principal
office, is c/o Three Cities Research, Inc., 650 Madison Avenue, New York, New
York 10022. Pursuant to Instruction C to Schedule 13D of the Exchange Act,
information with respect to J. William Uhrig, the sole officer, director and
stockholder of TCA, N.V., is set forth below.

         J. William Uhrig. Mr. Uhrig is an individual who is the sole officer,
director and stockholder of TCA, N.V. Pursuant to Instruction C to Schedule 13D
of the Exchange Act, the name, residence or business address, and present
principal occupation or employment of Mr. Uhrig is as follows:

<TABLE>
<CAPTION>
                                                 Residence or                           Principal Occupation
Name                                           Business Address                            or Employment
- ----                                           ----------------                            -------------
<S>                                  <C>                                    <C>    
J. William Uhrig                     c/o Three Cities Research, Inc.        Secretary and a Director of Three Cities
                                     650 Madison Avenue                     Research, Inc.
                                     New York, NY  10022
</TABLE>

         (d) None of the entities or persons identified in this Item 2 has,
during the last five years, been convicted in a criminal proceeding (excluding
traffic violations or similar misdemeanors).

         (e) None of the entities or persons identified in this Item 2 has,
during the last five years, been a party to a civil proceeding of a judicial or
administrative body of competent jurisdiction and as a result of such proceeding
was or is subject to a judgment, decree or final order enjoining future
violations of, or prohibiting or mandating activities subject to, federal or
state securities laws or finding any violation with respect to such laws.

         (f) Each individual named in this Item 2 is a citizen of the United
States of America, except that Willem de Vogel is a citizen of the Kingdom of
the Netherlands.


ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

         The aggregate purchase prices of the shares of the Issuer's Common
Stock purchased by the Three Cities Funds as reported in Item 5(c) of this
Schedule 13D were as follows:

<TABLE>
<CAPTION>
                  Name of Reporting Person              Aggregate Purchase Price
<S>               <C>                                   <C>       
                  Fund II                               $6,320,000

                  Offshore II                           $9,480,000
</TABLE>


         The Three Cities Funds purchased the Shares reported herein as
beneficially owned by them with contributions from partners of Fund II and
Offshore II.

ITEM 4. PURPOSE OF THE TRANSACTION.

         On December 24, 1998, TCF Acquisition Corporation ("Acquisition")
(whose sole stockholders are the Three Cities Funds) and COHR Inc. (the
"Company") entered into a Plan and Agreement of Merger pursuant to which
Acquisition agreed to commence a tender offer (the "Offer") for all of the
outstanding shares of the Company's common stock ("Common Shares" or "Shares").
The Offer consideration will be $5.375, net per Share in cash (or, under some
circumstances, $6.375 net per Share).


                                       6
<PAGE>   7
         In connection with its approval of the Merger Agreement, the Company's
Board of Directors approved the Three Cities Funds' and Acquisition's acquiring
Shares without limitation as to amount, and amended the Company's Rights
Agreement, dated as of November 23, 1998, between the Company and Chase Mellon
Shareholder Services LLC, so that the acquisition of Shares by the Three Cities
Funds or Acquisition would not cause Rights to be distributed to stockholders.
The Three Cities Funds then acquired from two shareholder groups for $5.125 per
Share a total of 3,085,425 Shares, plus an assignment of those shareholder
groups' claims with regard to certain stockholder suits pending against the
Company. The purpose of the Offer and the Merger is to enable Acquisition to
acquire all the Common Shares which the Three Cities Funds (and anybody else who
becomes a stockholder of Acquisition) do not already own. However, Acquisition
has agreed that, unless after it purchases the Shares which are properly
tendered in response to the Offer and not withdrawn, Acquisition and its
affiliates own at least 85% of the outstanding Common Shares, (a) Acquisition
will not cause the Merger to take place and (b) the Merger Agreement will
prohibit Acquisition from carrying out a business combination with the Company
during the next three years unless the business combination has been approved by
the Company's Board of Directors and authorized at an annual or special meeting
of stockholders of the Company, and not by written consent, by the affirmative
vote of not less than 66 2/3% of the outstanding Common Shares, other than
Shares owned by Acquisition and its affiliates. Therefore, although, because the
directors and officers of the Company, who own more than 2% of the outstanding
Common Shares, have agreed to tender their Shares in response to the Offer (or,
under some circumstances to retain their Shares but vote them in favor of the
Merger), Acquisition and its stockholders will be able to cast the votes
required for the Merger to be approved under the Delaware General Corporation
Law even if no other stockholders vote in favor of it, it is possible that
Acquisition will purchase the Shares which are properly tendered in response to
the Offer and not withdrawn, but that the Merger will not take place, and
therefore the stockholders of Acquisition will not own all the outstanding stock
of the Company.

         If the Shares purchased through the Offer, together with the other
Shares Acquisition and its stockholders (including the Three Cities Funds) own,
total at least 85% of the outstanding Common Shares, and the other conditions
set forth in the Merger Agreement are satisfied or waived, Acquisition is
required by the Merger Agreement to take all steps in its power to effect the
Merger.

         The Company may not, and may not authorize or permit its or any of its
subsidiaries' officers, directors, employees, agents or representatives
(including any investment banker, attorney or accountant retained by it or by
any of its subsidiaries) directly or indirectly to initiate, solicit, encourage
or otherwise facilitate any inquiry or the making of any proposal or offer with
respect to a merger, reorganization, share exchange, consolidation or similar
transaction involving the Company, or any purchase of or tender for, all or any
significant portion of the Company's equity securities or any significant
portion of the assets of the Company and its subsidiaries on a consolidated
basis. However, this will not prevent the Company from, in response to an
acquisition proposal which the Company receives despite complying with the
previous sentence and which the Company's Board determines, in good faith after
consultation with its independent financial advisor, would result (if
consummated in accordance with its terms) in a transaction which (i) would
result in the Company's stockholders receiving cash consideration which is
substantially greater than the Offer price and (ii) would be more favorable to
the Company's stockholders than the Merger, furnishing non-public information to
the person, entity or group which makes the acquisition proposal and entering
into discussions and negotiations with the potential acquiror.

         If the Company receives an acquisition proposal, or the Company learns
that someone other than Acquisition is contemplating soliciting tenders of
Common Shares or otherwise proposes to acquire the Company or its Common Shares
if the Company's stockholders do not tender their Common Shares to Acquisition
in response to the Offer or do not approve the Merger, the Company has agreed
promptly to notify Acquisition of that fact and to provide Acquisition with all
information in the Company's possession which Acquisition reasonably requests
regarding the acquisition proposal, solicitation of tenders or other proposed
transaction, and the Company will promptly, from time to time, provide
Acquisition with any additional information the Company obtains regarding the
acquisition proposal, the solicitation of tenders or the other proposed
transaction.

         The Company may terminate the Merger Agreement if by February 1, 1999,
the Company receives a proposal for a cash acquisition of the Company, or
somebody commences an all cash tender offer for any and all of the outstanding
Common Shares, which (x) would result in the Company's stockholders' receiving


                                       7
<PAGE>   8
cash consideration which is substantially greater than the Offer Price, (y) is
not subject to a financing contingency and is from a proposed acquiror which the
Board determines in good faith after consultation with its independent financial
advisor has the financial resources necessary to carry out the transaction, and
(z) the Board determines in good faith after consultation with its independent
financial advisor to be more favorable to the Company's stockholders than the
Offer and the Merger. However, the Company may only cancel the Merger Agreement
if, after the Company has received the proposal and given Acquisition at least
10 business days' prior notice that the Merger Agreement will terminate if
Acquisition does not increase the Offer Price to an amount at least as great as
the cash consideration the Company's stockholders would receive under the
proposal or tender offer by the other person, (A) Acquisition does not increase
the Offer Price to an amount at least as great as the cash per share the
Company's stockholders would receive as a result of the proposal or tender offer
by the other person, and (B) the Company has (1) paid Acquisition $1,720,000 and
(2) reimbursed Acquisition (or agreed in writing to reimburse Acquisition) for
all the expenses related to the transactions which are the subject of the Merger
Agreement which Acquisition or its affiliates (including the Three Cities Funds)
incurred after December 17, 1998, up to a maximum of $200,000 of expenses. If
the Company notifies Acquisition that the Merger Agreement will terminate unless
Acquisition increases the Offer Price, the Company will not be able to revoke
that notice without Acquisition's consent.

         Acquisition has agreed that, if the Company terminates the Merger
Agreement because of a proposal or tender offer by another person as described
in the preceding paragraph, at the request of the Board Acquisition will vote
for the proposal or tender its Shares, and cause the Three Cities Funds to
tender their Shares, in response to the tender offer.

         Effective concurrently with the execution of the Merger Agreement, the
Board approved increasing the number of members constituting the entire Board
from 8 to 10 and elected J. William Uhrig and W. Robert Wright II (each of whom
is an employee, and in the case of Mr. Uhrig, a Director, of Three Cities
Research, Inc.) to fill the two vacancies. The Merger Agreement provides that
until Acquisition purchases all the Common Shares which are properly tendered in
response to the Offer and not withdrawn, or the Merger Agreement terminates,
none of the Three Cities Funds nor Acquisition will vote any Shares or take any
other action to cause (i) anyone other than J. William Uhrig and W. Robert
Wright II (or replacements designated by Acquisition) to be elected to the
Company's Board, except by voting at an annual meeting of stockholders in favor
of the Board's nominees for election to the Board, (ii) the number of directors
constituting the entire Board to be increased or decreased, or (iii) any
director to be removed from the Board other than for cause.

         The purchase of the Shares tendered in response to the Offer will
reduce the number of Shares that might otherwise trade publicly and probably
will significantly reduce the number of holders of Shares, which could adversely
affect the liquidity and market value of the remaining Shares held by the
public. Depending upon the number of Common Shares purchased pursuant to the
Offer, the Shares may no longer meet the standards of the National Association
of Securities Dealers, Inc. for continued inclusion in the Nasdaq National
Market (the top tier market of the Nasdaq Stock Market).

         If the Common Shares no longer meet the requirements for inclusion in
any tier of the Nasdaq Stock Market, quotations might or might not still be
available from other sources. The extent of the public market, and availability
of quotations, for the Common Shares would depend upon the number of holders of
Common Stock after the purchase of the Shares tendered in response to the Offer,
whether securities firms are interested in maintaining a market in the Common
Shares, the possible termination of registration under the Securities and
Exchange Act of 1934, as amended (the "Exchange Act"), as described below, and
other factors.

         The Common Shares are currently registered under the Exchange Act. That
registration may be terminated upon application of the Company to the Securities
and Exchange Commission if the Shares are not listed on a national securities
exchange or quoted on Nasdaq and there are fewer than 300 record holders of the
Common Shares.

ITEM 5. INTEREST IN SECURITIES OF THE PARTNERSHIP.

         (a) As of the close of business on December 24, 1998, the Reporting
Persons, by virtue of the language of Rule 13d-3(d)(1)(i), may be deemed to own
beneficially in the aggregate the number and 


                                       8
<PAGE>   9
percentage of the Issuer's Common Stock owned by the Three Cities Funds, as set
forth below (percentages are based upon the number of Shares that were reported
to be outstanding in the Issuer's Form 10-Q as of September 30, 1998).

<TABLE>
<CAPTION>
                  Name                             Shares of Common Stock         Percentage
                  ----                             ----------------------         ----------
<S>               <C>                              <C>                            <C>  
                  Fund II                          1,234,170                      19.3%
                  Offshore II                      1,851,255                      29.0%
                                                   ---------                      ---- 
                           Total                   3,085,425                      48.3%
                                                   =========                      ====
</TABLE>


         (b) Pursuant to a management contract, Research has the sole power to
vote or to direct the vote and to dispose or to direct the disposition of the
Shares of which the Three Cities Funds are deemed the beneficial owners.

         (c) The only transactions in the Issuer's Common Stock effected by the
Reporting Persons during the last 60 days were the purchases by the Three Cities
Funds of an aggregate of 3,085,425 shares of Issuer Common Stock reported in
this Schedule 13D. The purchase price per share was $5.125. The transactions
were effected through a broker.

         (d) To the best of the Reporting Persons' knowledge, except as set
forth herein, no other person has the right to receive or the power to direct
the receipt of dividends from, or the proceeds from the sale of, any shares of
Common Stock which the Reporting Persons may be deemed to own beneficially.

         (e) Not applicable.

ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT TO
         SECURITIES OF THE ISSUER.

         Except as described under Items 4 and 5, there exist no contracts,
arrangements, understandings or relationships (legal or otherwise) between any
of the Reporting Persons and any other persons with respect to any securities of
the Issuer, including but not limited to transfer or voting of any such
securities, finder's fees, joint ventures, loan or option arrangements, puts or
calls, guarantees of profits, division of profits or loss, or the giving or
withholding of proxies.

ITEM 7. MATERIAL TO BE FILED AS EXHIBITS.

         Exhibit A -- Plan and Agreement of Merger, dated as of December 24,
1998.

         Exhibit B -- Joint Filing Agreement dated January 3, 1999.




                                       9

<PAGE>   1
                                    EXHIBIT A

                          PLAN AND AGREEMENT OF MERGER




<PAGE>   2
                          PLAN AND AGREEMENT OF MERGER

                                      DATED

                                DECEMBER 24, 1998

                                     BETWEEN

                                    COHR INC.

                                       AND

                           TCF ACQUISITION CORPORATION






<PAGE>   3
<TABLE>

<S>                                                                                        <C>
Article 1             THE TENDER OFFER...................................................   1  
                                                                                           
         1.1      The Tender Offer.......................................................   1
                                                                                           
         1.2      Company Action.........................................................   4
                                                                                           
Article 2             THE MERGER.........................................................   6
                                                                                           
         2.1      Agreement to Effect Merger.............................................   6
                                                                                           
         2.2      The Merger.............................................................   6
                                                                                           
         2.3      Certificate of Incorporation...........................................   7
                                                                                           
         2.4      By-Laws................................................................   7
                                                                                           
         2.5      Directors..............................................................   7
                                                                                           
         2.6      Officers...............................................................   7
                                                                                           
         2.7      Stock of the Company...................................................   7
                                                                                           
         2.8      Stock of Acquisition...................................................   8
                                                                                           
         2.9      Stockholders Meeting...................................................   8
                                                                                           
         2.10     Voting by Acquisition..................................................   9
                                                                                           
         2.11     Dissenting Shares......................................................   9
                                                                                           
         2.12     Payment for Shares.....................................................  10
                                                                                           
         2.13     Options and Warrants...................................................  12
                                                                                           
Article 3             EFFECTIVE TIME OF MERGER...........................................  12
                                                                                           
         3.1      Date of the Merger.....................................................  12
                                                                                           
         3.2      Execution of Certificate of Merger.....................................  12
                                                                                           
         3.3      Effective Time of the Merger...........................................  13
                                                                                           
Article 4             REPRESENTATIONS AND WARRANTIES.....................................  13
                                                                                           
         4.1      Representations and Warranties of Acquisition..........................  13
                                                                                           
         4.2      Representations and Warranties of the Company..........................  16
                                                                                           
         4.3      Termination of Representations and Warranties..........................  23
                                                                                           
Article 5             ACTIONS PRIOR TO THE MERGER........................................  23
                                                                                           
         5.1      Activities Until Effective Time........................................  23
                                                                                           
         5.2      HSR Act Filings........................................................  25
                                                                                           
         5.3      Proxy Statements and Stockholders' Meetings............................  25
                                                                                           
         5.4      No Solicitation of Offers; Notice of Proposals from Others.............  26
                                                                                           
         5.5      Acquisition's Efforts to Fulfill Conditions............................  27
                                                                                           
         5.6      Company's Efforts to Fulfill Conditions................................  27
                                                                                           
Article 6             CONDITIONS PRECEDENT TO MERGER.....................................  27
                                                                                           
         6.1      Conditions to the Company's Obligations................................  27
                                                                                           
         6.2      Conditions to Acquisition's Obligations................................  28
</TABLE>



<PAGE>   4
<TABLE>
<S>                                                                                        <C>
Article 7             TERMINATION........................................................  29
                                                                                           
         7.1      Right to Terminate.....................................................  29
                                                                                           
         7.2      Manner of Terminating Agreement........................................  33
                                                                                           
         7.3      Effect of Termination..................................................  33
                                                                                           
Article 8             ABSENCE OF BROKERS.................................................  33
                                                                                           
         8.1      Representations and Warranties Regarding Brokers and Others............  33
                                                                                           
Article 9             OTHER AGREEMENTS...................................................  34
                                                                                           
         9.1      Indemnification for Prior Acts.........................................  34
                                                                                           
         9.2      Agreement Not To Merge Under Certain Conditions........................  35
                                                                                           
         9.3      Agreement Regarding Directors..........................................  36
                                                                                           
         9.4      Agreement to Vote or Sell Shares.......................................  36
                                                                                           
         9.5      Control of Stockholder Suits...........................................  37
                                                                                           
Article 10            GENERAL............................................................  37
                                                                                           
         10.1     Expenses...............................................................  37
                                                                                           
         10.2     Access to Properties, Books and Records................................  37
                                                                                           
         10.3     Press Releases.........................................................  38
                                                                                           
         10.4     Entire Agreement.......................................................  38
                                                                                           
         10.5     Effect of Disclosures..................................................  38
                                                                                           
         10.6     Captions...............................................................  38
                                                                                           
         10.7     Prohibition Against Assignment.........................................  39
                                                                                           
         10.8     Notices and Other Communications.......................................  39
                                                                                           
         10.9     Governing Law..........................................................  41
                                                                                           
         10.10    Amendments.............................................................  41
                                                                                           
         10.11    Counterparts...........................................................  41
</TABLE>


<PAGE>   5
                          PLAN AND AGREEMENT OF MERGER


         This is a Plan and Agreement of Merger (the "Agreement") dated as of
December 24, 1998 between COHR Inc. (the "Company"), a Delaware corporation, and
TCF Acquisition Corporation ("Acquisition"), a Delaware corporation.

                                   ARTICLE 1

                                THE TENDER OFFER

         1.1 The Tender Offer. (a) On the date of this Agreement, Three Cities
Fund II L.P. and Three Cities Offshore II C.V. (the "Three Cities Funds") are
purchasing from funds managed by Franklin Research, Inc. (the "Franklin Funds")
and by Strong Capital Management, Inc. (the "Strong Funds" and, together with
the Franklin Funds, the "Funds") substantially all the stock of the Company
which the Funds own. Not later than the first business day after the date of
this Agreement, Acquisition will make a public announcement of an offer (the
"Tender Offer") to purchase any and all the outstanding common stock of the
Company ("Common Stock") at a price per share in cash (the "Tender Offer Price")
of $5.375. Notwithstanding the foregoing, the Tender Offer Price will be subject
to possible increase as provided in subparagraph (d).

              (b) Within five business days after the public announcement of the
Tender Offer, Acquisition will file with the Securities and Exchange Commission
("SEC") a Tender Offer Statement on Schedule 14D-1 with respect to the Tender
Offer (together with any amendments or supplements, the "Schedule 14D-1"),
including forms of an offer to purchase, a letter of transmittal and a summary
advertisement (the Schedule 14D-1 and the documents included in it by which the
Tender Offer will be made, as they may be supplemented or amended, being the
"Offer Documents"). Promptly after that, Acquisition will communicate the Tender
Offer to the record holders and beneficial owners of the Common Stock. Each of
Acquisition and the Company will promptly correct any information provided by it
for use in the Offer Documents if


                                       1
<PAGE>   6
and to the extent that information becomes incomplete or inaccurate in any
material respect, and Acquisition will supplement or amend the Offer Documents
to the extent required by the Securities Exchange Act of 1934, as amended (the
"Exchange Act") and the rules under it, file the amended or supplemented Offer
Documents with the SEC and, if required, disseminate the amended Offer Documents
to the Company's stockholders. The Company and its counsel will be given a
reasonable opportunity to review the Offer Documents and any amendments or
supplements to them before they are filed with the SEC or disseminated to the
Company's stockholders.

              (c) The day on which the Tender Offer expires (the "Expiration
Date") will not be earlier than 20 business days, and (except as provided in
subparagraphs (d) and (e)) will not be later than 60 days, after the day on
which the Schedule 14D-1 is filed with the SEC.

              (d) If the Company, with the approval of its Board of Directors
(the "Board"), requests that Acquisition extend the Expiration Date in order to
permit the Company to attempt to settle Sherleigh Associates Inc. Profit Sharing
Plan v. Cohr, Inc., et. al. in the United States District Court, Central
District of California, 988-3028 JSL (BQRx); Leonard Leeds v. Umesh Malhotra,
et. al. in the Superior Court of the State of California, County of Los Angeles,
BC 189490; Marcia Zabronsky, et. al. v. Cohr, Inc. et. al. in the United States
District Court, Central District of California, Western Division, 98-3493 R
(Ex); Robert Schug v. Paul Chopra, et. al. in the Superior Court of the State of
California, County of Los Angeles, BC 190933; Charles Birdu v. Cohr, Inc. et. al
in the United States District Court, Central District of California, 98-4177
WMB(AJWx) and any other suits brought by or on behalf of stockholders of the
Company relating to the occurrences which are the subject of those five suits
(together, the "Stockholder Suits"), Acquisition will extend the Expiration Date
to a date designated by the Company which is not more than 120 days after the
day on which the Schedule 14D-1 is filed with the SEC, and if, within that 120
day period, all the counsel for the plaintiffs and all the counsel for the


                                       2
<PAGE>   7
defendants in the Stockholder Suits enter into a settlement agreement relating
to settlement of all the Stockholder Suits on a basis which will not require the
Company to pay (net of any insurance proceeds to which the Company's insurers
have agreed in writing) more than a total of $3,000,000 for damages,
indemnification of other defendants, fees and expenses of the plaintiffs'
counsel, fees and expenses of the defendants' counsel and the Company's other
out of pocket expenses, but not including any sum paid by the Company as
settlement proceeds or otherwise to Acquisition, to either of the Three Cities
Funds or to any other stockholders of Acquisition which are affiliated with the
Three Cities Funds, Acquisition will, at the request of the Company made within
the 120 day period, further extend the Expiration Date to a date designated by
the Company which is not more than 210 days after the day on which the Schedule
14D-1 is filed with the SEC. If, before the day on which the Tender Offer, as
extended, expires, the United States District Court, Central District of
California, enters an order giving preliminary approval of the settlement agreed
to in the relevant settlement agreement, Acquisition will (i) increase the
Tender Offer Price by $1.00 per share and (ii) extend the Expiration Date until
at least 10 business days after Acquisition publicly announces the increased
Tender Offer Price.

              (e) Subject to the conditions to the Tender Offer set forth on
Exhibit 1.1-E and the other conditions set forth in this Agreement, Acquisition
will, not later than five days after the Expiration Date, accept for payment and
pay for all the shares of Common Stock which are properly tendered in response
to the Tender Offer and not withdrawn. The obligation of Acquisition to accept
for payment and pay for shares which are properly tendered and not withdrawn
will not be subject to any conditions other than those set forth on Exhibit
1.1-E. Acquisition will not (i) decrease the Tender Offer Price below that
described in subparagraphs (a) and (d), (ii) decrease the number of shares being
solicited in the Tender Offer, (iii) change the form of consideration payable in
the Tender Offer, (iv) modify or add to the conditions set


                                       3
<PAGE>   8
forth on Exhibit 1.1-E or (v) extend the Expiration Date to a day which is more
than 60 days after the day on which the Schedule 14D-1 is filed with the SEC,
except that (A) the Expiration Date may be extended as provided in subparagraph
(d), (B) if the waiting periods under the Hart-Scott-Rodino Antitrust
Improvements Act of 1976, as amended (the "HSR Act") have not expired or been
terminated at least three days before the Expiration Date, the Expiration Date
may be extended until 10 business days after the day on which the waiting
periods under the HSR Act expire or are terminated, (C) if the Tender Offer is
modified to increase the Tender Offer Price or in any other manner permitted by
this Agreement, the Expiration Date may be extended until 10 business days after
the day on which Acquisition makes a public announcement of the modification,
(D) if anyone other than Acquisition makes a tender offer for Common Stock
before the Tender Offer expires, Acquisition may extend the Expiration Date
until not more than 10 business days after the other tender offer expires, and
(E) if Acquisition is prevented by an order of a court or other governmental
agency from accepting shares which are tendered in response to the Tender Offer,
Acquisition may extend the Expiration Date until 10 business days after
Acquisition is able to accept shares without violating any order of any court or
other governmental agency.

         1.2 Company Action. (a) The Company approves of and consents to the
Tender Offer and represents and warrants that the Board has (i) determined that
this Agreement and the transactions contemplated by it are fair to and in the
best interests of the Company and its stockholders, (ii) approved this Agreement
and the transactions contemplated by it, including the Three Cities Funds'
purchase of the stock of the Company which the Funds own, the Tender Offer and
the Merger (described in Article 2), and (iii) resolved to recommend that the
Company's stockholders accept the Tender Offer, tender their shares in response
to the Tender Offer, and adopt and approve this Agreement and the Merger.
Simultaneously with the execution of this Agreement, each of the directors and
executive officers of the Company has 


                                       4
<PAGE>   9
agreed to tender and sell his or her shares of Common Stock in response to the
Tender Offer, except that directors and executive officers whose sales of their
shares in response to the Tender Offer might result in liability under Section
16(b) of the Exchange Act have agreed that if they do not tender and sell their
shares in response to the Tender Offer, they will vote their shares in favor of
the Merger. Notwithstanding anything contained in this subparagraph (a) or
elsewhere in this Agreement, if the Board, based upon written advice from its
counsel, determines, in good faith to withdraw, modify or amend the
recommendation, because the failure to do so could reasonably be expected to be
a breach of the directors' fiduciary duties under applicable law, that
withdrawal, modification or amendment will not constitute a breach of this
Agreement.

              (b) The Company will file with the SEC, promptly after Acquisition
files the Schedule 14D-1, a Solicitation/Recommendation Statement on Schedule
14D-9 (together with any amendments or supplements, the "Schedule 14D-9")
containing the recommendations described in subparagraph (a) and will
disseminate the Schedule 14D-9 as required by Rule 14d-9 under the Exchange Act.
The Company and Acquisition each agrees to correct promptly any information
provided by it for use in the Schedule 14D-9 if and to the extent that
information is or becomes incomplete or inaccurate in any material respect and
the Company will file any corrected Schedule 14D-9 with the SEC and disseminate
the corrected Schedule 14D-9 to the Company's stockholders to the extent
required by the Exchange Act or the rules under it.

              (c) In connection with the Tender Offer, the Company will promptly
furnish Acquisition with mailing labels, security position listings and any
other available listing or computer files containing the names and addresses of
the record holders or beneficial owners of shares of Common Stock as of a recent
date and the Company will furnish Acquisition with such additional information
and assistance (including, without limitation, updated lists of stockholders,
mailing labels and lists of securities positions) as Acquisition or its
representatives


                                       5
<PAGE>   10
may reasonably request in order to communicate the Tender Offer to the record
holders and beneficial owners of the Common Stock. Subject to the requirements
of applicable law, Acquisition will hold in confidence the information contained
in any such labels, listings or files, and will use that information only in
connection with the Tender Offer and the Merger. If this Agreement is
terminated, Acquisition will return to the Company the originals and all copies
of that information which are in Acquisition's possession.

                                   ARTICLE 2

                                   THE MERGER

         2.1 Agreement to Effect Merger. If (a) the number of shares which are
owned by Acquisition, the Three Cities Funds and any other stockholders of
Acquisition after Acquisition purchases all the shares which are properly
tendered in response to the Tender Offer and not withdrawn, totals at least 85%
of all the Common Stock which is outstanding on the Expiration Date, and (b) the
conditions to the Merger set forth in Paragraph 6.2 are satisfied or waived,
Acquisition will take all steps in its power, including voting, and causing its
affiliates to vote, all the Common Stock beneficially owned by any of them in
favor of adoption of this Agreement and approval of the Merger, to cause
Acquisition to be merged into the Company (the "Merger") on the terms and with
the effects set forth in Paragraphs 2.2 through 2.8.

         2.2 The Merger. In the Merger, Acquisition will be merged into the
Company, which will be the surviving corporation of the Merger (the "Surviving
Corporation"). Except as specifically provided in this Agreement, when the
Merger becomes effective, (i) the real and personal property, other assets,
rights, privileges, immunities, powers, purposes and franchises of the Company
will continue unaffected and unimpaired by the Merger, (ii) the separate
existence of Acquisition will terminate, and Acquisition's real and personal
property, other assets, rights, privileges, immunities, powers, purposes and
franchises will be merged into the 


                                       6
<PAGE>   11
Surviving Corporation, and (iii) the Merger will have the other effects
specified in Section 259 of the Delaware General Corporation Law (the "DGCL").

         2.3 Certificate of Incorporation. From the Effective Time (described in
Paragraph 3.3) until subsequently amended (subject to Paragraph 9.1), the
Certificate of Incorporation of Acquisition immediately before the Effective
Time will be the Certificate of Incorporation of the Surviving Corporation, and
that Certificate of Incorporation, separate and apart from this Agreement, may
be certified as the Certificate of Incorporation of the Surviving Corporation.

         2.4 By-Laws. At the Effective Time, the By-Laws of Acquisition
immediately before the Effective Time will be the By-Laws of the Surviving
Corporation, until they are altered, amended or repealed (subject to Paragraph
9.1).

         2.5 Directors. The directors of Acquisition immediately before the
Effective Time will be the directors of the Surviving Corporation after the
Effective Time and will hold office in accordance with the By-Laws of the
Surviving Corporation for the respective terms shown on Exhibit 2.5.

         2.6 Officers. The officers of the Company immediately before the
Effective Time will be the officers of the Surviving Corporation after the
Effective Time and will hold office at the pleasure of the Board of Directors of
the Surviving Corporation.

         2.7 Stock of the Company. (a) Except as provided in subparagraph (b),
at the Effective Time each share of Common Stock which is outstanding
immediately before the Effective Time will be converted into and become the
right to receive a sum in cash equal to the Tender Offer Price (the "Merger
Price").

              (b) Each share of Common Stock held in the treasury of the
Company, and each share of Common Stock held by Acquisition or by any direct or
indirect subsidiary of the


                                       7
<PAGE>   12
Company, immediately before the Effective Time will, at the Effective Time, be
cancelled and cease to exist and no payment will be made with respect to any of
those shares.

         2.8 Stock of Acquisition. At the Effective Time, each share of common
stock, par value $1.00 per share, of Acquisition ("Acquisition common stock")
which is outstanding immediately before the Effective Time will be converted
into and become one share of common stock of the Surviving Corporation
("Surviving Corporation Common Stock"). At the Effective Time, a certificate
which represented Acquisition common stock will automatically become and be a
certificate representing the number of shares of Surviving Corporation Common
Stock into which the Acquisition common stock represented by the certificate was
converted.

         2.9 Stockholders Meeting. If the conditions described in clauses (a)
and (b) of Paragraph 2.1 are satisfied, and if approval by the Company's
stockholders is required by applicable law in order to consummate the Merger,
the Company will:

              (a) hold a special meeting of its stockholders as soon as
practicable following the Expiration Date for the purpose of adopting this
Agreement and approving the Merger (the "Stockholders Meeting");

              (b) as promptly as practicable after the Expiration Date, (i) file
with the SEC a proxy statement (the "Proxy Statement") and other proxy
soliciting materials relating to the Stockholders Meeting, (ii) respond promptly
to any comments made by the staff of the SEC with respect to the Proxy Statement
or other proxy soliciting materials, (iii) cause the Proxy Statement to be
mailed to its stockholders at the earliest practicable time following the
Expiration Date, and (iv) in all other respects, use its best efforts to cause
its stockholders to adopt this Agreement and approve the Merger; and


                                       8
<PAGE>   13
              (c) include in the Proxy Statement the recommendation of the Board
that the stockholders of the Company vote in favor of the adoption of this
Agreement and approve the Merger, unless the Board, based upon written advice
from its counsel, determines in good faith that the failure to amend or withdraw
that recommendation could reasonably be expected to be a breach of the
directors' fiduciary duties under applicable law.

         2.10 Voting by Acquisition. Until (a) the earlier of the Expiration
Time or such time as this Agreement is terminated and (b) if the conditions
described in clauses (a) and (b) of Paragraph 2.1 are satisfied, the earlier of
the Effective Time or such time as this Agreement is terminated, (i) Acquisition
will not, and Acquisition will cause the Three Cities Funds not to, dispose of
any of stock of the Company (except to a parent or subsidiary of Acquisition
which agrees to be bound by Paragraph 2.1 and this Paragraph) and (ii)
Acquisition will, and Acquisition will cause the Three Cities Funds to, vote all
shares of Common Stock which Acquisition or the Three Cities Funds own or
otherwise have the power to vote as required by Paragraph 2.1.

         2.11 Dissenting Shares. (a) Notwithstanding any provision of this
Agreement to the contrary, Common Stock that is outstanding immediately prior to
the Effective Time which is held by stockholders who have complied with Section
262 of the DGCL (including making a timely demand for appraisal and not voting
in favor of or consenting to the Merger) will not be converted into the right to
receive the Merger Price. Instead, if the Merger takes place, the Surviving
Corporation will pay the holders of those shares the fair value of the shares
determined as provided in Section 262 of the DGCL. Shares held by stockholders
who fail to perfect, or who otherwise properly withdraw or lose, their rights to
receive the fair value of their shares determined under Section 262 of the DGCL
will be deemed to have been converted, at the later of the Effective Time or the
time they withdraw or lose their rights to receive the fair value of their
shares, into the right to receive the Merger Price, without any interest.


                                       9
<PAGE>   14
              (b) The Company will promptly give Acquisition (i) notice of any
demands for appraisal received by the Company, any withdrawals of any such
demands, and any other instruments served pursuant to Section 262 of the DGCL
which the Company receives and (ii) the opportunity to direct all negotiations
and proceedings with respect to demands for appraisal under the DGCL. The
Company will not, except with the prior written consent of Acquisition, make any
payment with respect to any demands for payment of the fair value of shares or
offer to settle or settle any such demands.

         2.12 Payment for Shares. (a) Prior to the Effective Time, Acquisition
will designate a bank or trust company to act as Paying Agent in connection with
the Merger (the "Paying Agent"). At, or immediately before, the Effective Time,
Acquisition will provide the Paying Agent with the funds necessary to make the
payments contemplated by Paragraph 2.7. Until used for that purpose, the funds
will be invested by the Paying Agent, as directed by Acquisition, in obligations
of or guaranteed by the United States of America or obligations of an agency of
the United States of America which are backed by the full faith and credit of
the United States of America, in commercial paper obligations rated A-1 or P-1
or better by Moody's Investors Services Inc. or Standard & Poors' Corporation,
or in deposit accounts, certificates of deposit or banker's acceptances of,
repurchase or reverse repurchase agreements with, or Eurodollar time deposits
purchased from, commercial banks with capital, surplus and undivided profits
aggregating more than $200 million (based on the most recent financial
statements of the banks which are then publicly available at the SEC or
otherwise).

         (b) Promptly after the Effective Time, the Surviving Corporation will
cause the Paying Agent to mail to each person who was a record holder of Common
Stock at the Effective Time, a form of letter of transmittal for use in
effecting the surrender of stock certificates representing Common Stock
("Certificates") in order to receive payment of the Merger Price. When the
Paying Agent receives a Certificate, together with a properly completed and
executed 


                                       10
<PAGE>   15
letter of transmittal and any other required documents, the Paying Agent will
pay to the holder of the Certificate, or as otherwise directed in the letter of
transmittal, the Merger Price with regard to the shares represented by the
Certificate, and the Certificate will be cancelled. No interest will be paid or
accrued on the cash payable upon the surrender of Certificates. If payment is to
be made to a person other than the person in whose name a surrendered
Certificate is registered, the surrendered Certificate must be properly endorsed
or otherwise be in proper form for transfer, and the person who surrenders the
Certificate must provide funds for payment of any transfer or other taxes
required by reason of the payment to a person other than the registered holder
of the surrendered Certificate or establish to the satisfaction of the Surviving
Corporation that the tax has been paid. After the Effective Time, a Certificate
which has not been surrendered will represent only the right to receive the
Merger Price, without any interest.

              (c) If a Certificate has been lost, stolen or destroyed, the
Surviving Corporation will accept an affidavit and indemnification reasonably
satisfactory to it instead of the Certificate.

              (d) At any time which is more than six months after the Effective
Time, the Surviving Corporation may require the Paying Agent to deliver to it
any funds which had been made available to the Paying Agent and have not been
disbursed to holders of shares of Common Stock (including, without limitation,
interest and other income received by the Paying Agent in respect of the funds
made available to it), and after the funds have been delivered to the Surviving
Corporation, former stockholders of the Company must look to the Surviving
Corporation for payment of the Merger Price upon surrender of the Certificates
held by them. Neither the Surviving Corporation nor the Paying Agent will be
liable to any former stockholder of the Company for any Merger consideration
which is delivered to a public official pursuant to any abandoned property,
escheat or similar law.


                                       11
<PAGE>   16
              (e) After the Effective Time, the Surviving Corporation will not
record any transfers of shares of Common Stock on the stock transfer books of
the Company or the Surviving Corporation, and the stock ledger of the Company
will be closed. If, after the Effective Time, Certificates are presented for
transfer, they will be cancelled and treated as having been surrendered for the
Merger Price.

         2.13 Options and Warrants. At the Effective Time, each option or
warrant issued by the Company which is outstanding at that time will become the
right to receive a sum in cash equal to (a) the amount, if any, by which the
Merger Price exceeds the per share exercise price of the option or warrant,
times (b) the number of shares of Common Stock issuable upon exercise of the
option or warrant in full. In order to receive the amount to which a holder of
an option or warrant is entitled under this Paragraph, the holder must deliver
to the Company (i) any certificate or option agreement relating to the option or
warrant and (ii) a document in which the holder acknowledges that the payment
the holder is receiving is in full satisfaction of any rights the holder may
have under or with regard to the option or warrant.

                                   ARTICLE 3

                            EFFECTIVE TIME OF MERGER

         3.1 Date of the Merger. The day on which the Merger is to take place
(the "Merger Date") will be (a) the day on which the Merger is approved by the
holders of a majority of the outstanding shares of Common Stock or (b) if
stockholder approval of the Merger is not required by applicable law or by the
rules of the Nasdaq National Market (if they are applicable), a day designated
by Acquisition which will be not later than 10 days after the Expiration Date.
The Merger Date may be changed with the consent of the Company and Acquisition.

         3.2 Execution of Certificate of Merger. Not later than 3:00 P.M. on the
day before the Merger Date, (a) Acquisition and the Company will each execute a
certificate of merger (the 


                                       12
<PAGE>   17
"Certificate of Merger") substantially in the form of Exhibit 3.2 and deliver it
to Rogers & Wells for filing with the Secretary of State of Delaware. Rogers &
Wells will be instructed that, if it is notified on the Merger Date that all the
conditions in Article VI have been fulfilled or waived, it is to cause the
Certificate of Merger to be filed with the Secretary of State of Delaware on the
Merger Date or as soon after that date as is practicable.

         3.3 Effective Time of the Merger. The Merger will become effective at
11:59 P.M. on the day when the Certificate of Merger is filed with the Secretary
of State of Delaware (that being the "Effective Time").

                                   ARTICLE 4

                         REPRESENTATIONS AND WARRANTIES

         4.1 Representations and Warranties of Acquisition. Acquisition
represents and warrants to the Company as follows:

              (a) Acquisition is a corporation duly organized, validly existing
and in good standing under the laws of the State of Delaware.

              (b) Acquisition has all corporate power and authority necessary to
enable it to enter into this Agreement and carry out the transactions
contemplated by this Agreement. All corporate actions necessary to authorize
Acquisition to enter into this Agreement and carry out the transactions
contemplated by it have been taken. This Agreement has been duly executed by
Acquisition and is a valid and binding agreement of Acquisition, enforceable
against Acquisition in accordance with its terms.

              (c) Neither the execution or delivery of this Agreement or of any
document to be delivered in accordance with this Agreement nor the consummation
of the transactions contemplated by this Agreement or by any document to be
delivered in accordance with this 


                                       13
<PAGE>   18
Agreement will violate, result in a breach of, or constitute a default (or an
event which, with notice or lapse of time or both would constitute a default)
under, the Certificate of Incorporation or by-laws of Acquisition, any agreement
or instrument to which Acquisition or any subsidiary of Acquisition is a party
or by which any of them is bound, any law, or any order, rule or regulation of
any court or governmental agency or other regulatory organization having
jurisdiction over Acquisition or any of its subsidiaries, except violations or
breaches of, or defaults under, agreements or instruments which would not have a
Material Adverse Effect on any of the Company, Acquisition or either of the
Three Cities Funds.

              (d) No governmental filings, authorizations, approvals or
consents, or other governmental action, other than the termination or expiration
of waiting periods under the HSR Act, if any, are required to permit Acquisition
to fulfill all its obligations under this Agreement.

              (e) Acquisition was formed solely for the purpose of engaging in
the transaction contemplated by this Agreement. Acquisition has not, and on the
Effective Date will not have, engaged in any activities or incurred, directly or
indirectly, any obligations or liabilities, except the activities relating to or
contemplated by this Agreement and obligations or liabilities incurred in
connection with those activities and with the transactions contemplated by this
Agreement.

              (f) Neither the Offer Documents nor any information supplied by
Acquisition for inclusion in the Schedule 14D-9 will, at the respective times
the Schedule 14D-1 and the Schedule 14D-9 are filed with the SEC and first
published, sent or given to the Company's stockholders, contain a false or
misleading statement with respect to any material fact or omit to state any
material fact required to be stated therein or necessary in order to make the
statements therein, in light of the circumstances under which they are made, not
misleading. On the date the Proxy Statement is mailed to the Company's
stockholders and on the date of the Stockholders Meeting, none of the
information supplied by Acquisition for inclusion in the 


                                       14
<PAGE>   19
Proxy Statement will be false or misleading with respect to any material fact or
will omit to state any material fact required to be stated therein or necessary
in order to make the statements therein, in light of the circumstances under
which they are made, not misleading or necessary to correct any statement in any
earlier communication with respect to the Stockholders Meeting or the
solicitation of proxies to be used at the Stockholders Meeting. However,
Acquisition does not make any representations or warranties with respect to
information supplied by the Company or any of its affiliates or representatives
for inclusion in the Offering Documents, or with respect to the Schedule 14D-9
or the Proxy Statement (except to the extent of information supplied by
Acquisition for inclusion in the Schedule 14D-9 or the Proxy Statement). The
Offering Documents will comply as to form in all material respects with the
requirements of the Exchange Act and the rules under it.

              (g) At the date of this Agreement, Acquisition is wholly owned by
the Three Cities Funds. The Three Cities Funds have, or have arranged equity
investments or loans which will provide, sufficient funds to enable Acquisition
to purchase and pay for in a timely manner all the Common Stock which is
tendered in response to the Tender Offer and enable Acquisition to fulfill in a
timely manner all of its other obligations under this Agreement.

              (h) At the date of this Agreement, neither Acquisition nor either
of the Three Cities Funds is the subject of any suit or governmental proceeding
which seeks to prevent Acquisition from completing the transactions which are
the subject of this Agreement, nor, to the best of Acquisition's knowledge, has
any such suit or proceeding been threatened.

              (i) Prior to purchasing Common Stock from either of the Funds, the
Three Cities Funds disclosed to the Funds the principal terms of this Agreement,
including the terms relating to the amount of the Tender Offer Price and the
amount of the Merger Price.


                                       15
<PAGE>   20
              (j) In connection with the purchase of Common Stock from the
Funds, the Three Cities Funds will obtain from the Funds assignments of (i) all
claims the Funds have or may have as purchasers or holders of Common Stock
against the Company, any directors, officers, agents or employees of, or
underwriters, accountants or attorneys for, the Company or any other persons
arising out of or relating to disclosure, or omissions to disclosure, by the
Company relating to its or its subsidiaries' business, operating results,
financial condition or prospects or to any other subjects, (ii) all rights
arising out of or resulting from those claims or the subject matter of those
claims, and (iii) all rights to payments, and all other rights which they have
or to which they in the future become entitled as the holders of those claims
(including all the claims and rights the Funds may have as members of any class
or alleged class of plaintiffs, or otherwise as stockholders of the Company
during the relevant time period, in the Stockholder Suits).

              (k) In acquiring claims and rights relating to the Stockholder
Suits, the Three Cities Funds were at all times advised by competent counsel of
their own choosing, and they have not been represented by anyone who is a
counsel for any of the plaintiffs in any of the Stockholder Suits.

         4.2 Representations and Warranties of the Company. The Company
represents and warrants to Acquisition as follows:

              (a) The Company is a corporation duly organized, validly existing
and in good standing under the laws of the State of Delaware.

              (b) The Company has all corporate power and authority necessary to
enable it to enter into this Agreement and carry out the transactions
contemplated by this Agreement. All corporate actions necessary to authorize the
Company to enter into this Agreement and carry out the transactions contemplated
by it, other than adoption of this Agreement by the 


                                       16
<PAGE>   21
stockholders of the Company, have been taken. This Agreement has been duly
executed by the Company and is a valid and binding agreement of the Company,
enforceable against the Company in accordance with its terms.

              (c) Neither the execution and delivery of this Agreement or of any
document to be delivered in accordance with this Agreement nor the consummation
of the transactions contemplated by this Agreement or by any document to be
delivered in accordance with this Agreement will violate, result in a breach of,
or constitute a default (or an event which, with notice or lapse of time or
both, would constitute a default) under, the Certificate of Incorporation or
By-Laws of the Company, any agreement or instrument to which the Company or any
subsidiary of the Company is a party or by which any of them is bound, any law,
or any order, rule or regulation of any court or governmental agency or other
regulatory organization having jurisdiction over the Company or any of its
subsidiaries except violations or breaches of, or defaults under, agreements or
instruments which would not have a Material Adverse Effect on any of the
Company, Acquisition or either of the Three Cities Funds.

              (d) Except as shown on Exhibit 4.2-D, no governmental filings,
authorizations, approvals, or consents, or other governmental action, other than
the expiration or termination of waiting periods under the HSR Act, if any, are
required to permit the Company to fulfill all its obligations under this
Agreement.

              (e) Effective concurrently with the execution of this Agreement,
the Board has approved increasing in the number of members constituting the
entire Board to ten and has elected J. William Uhrig and Wm. Robert Wright III
to fill the resulting two vacancies on the Board.

              (f) The Company and each of its subsidiaries is qualified to do
business as a foreign corporation in each state in which it is required to be
qualified, except states in which the 


                                       17
<PAGE>   22
failure to qualify, in the aggregate, would not have a Material Adverse Effect
upon the Company. As used in this Agreement, the term "Material Adverse Effect"
upon a company means a material adverse effect upon (i) the consolidated
financial position of that company and its subsidiaries taken as a whole, or
(ii) the consolidated results of operations of that company and its subsidiaries
taken as a whole compared with the consolidated results of their operations
during the same period of the prior year. For the purposes of the definition of
Material Adverse Effect, (x) an adverse change in financial condition will be
material if it is a material reduction of working capital, tangible net worth or
net asset value, and (y) an adverse change in results of operations will be
material if it is a material reduction in total revenues, net income before
income taxes or net income.

              (g) The only authorized stock of the Company is 20,000,000 shares
of Common Stock and 2,000,000 shares of preferred stock, par value $.01 per
share. At the date of this Agreement, the only outstanding stock of the Company
is 6,433,189 shares of Common Stock. All those shares have been duly authorized
and issued and are fully paid and non-assessable. Except as shown on Exhibit
4.2-G, the Company has not issued any options, warrants or convertible or
exchangeable securities, and is not a party to any other agreements, which
require, or upon the passage of time, the payment of money or the occurrence of
any other event may require, the Company to issue or sell any of its stock. The
Company, with the approval of the Board, has amended the Rights Agreement (the
"Rights Agreement") dated November 23, 1998 between the Company and ChaseMellon
Shareholder Services LLC, to exclude the Three Cities Funds and Acquisition from
the definition of "Acquiring Person" in the Rights Agreement. As a result of
that amendment, neither the purchase of Common Stock by the Three Cities Funds
from the Funds nor any of the transactions contemplated by this Agreement will
result in there being a Distribution Date under the Rights Agreement or
otherwise entitle anyone to exercise Rights under the Rights Agreement.


                                       18
<PAGE>   23
              (h) Except as shown on Exhibit 4.2-G or 4.2-H, (i) each of the
corporations and other entities of which the Company owns directly or indirectly
50% or more of the equity (each corporation or other entity of which a company
owns directly or indirectly 50% or more of the equity being a "subsidiary" of
that company) has been duly organized, and is validly existing and in good
standing under the laws of its state of incorporation, (ii) all outstanding
shares of stock of the Company's subsidiaries owned by the Company or any of its
subsidiaries are duly authorized, validly issued, fully paid and non-assessable
and are not subject to any preemptive rights, and (iii) neither the Company nor
any of its subsidiaries has issued any options, warrants or convertible or
exchangeable securities, or is a party to any other agreements, which require,
or upon the passage of time, the payment of money or the occurrence of any other
event may require, the Company or any subsidiary to issue or sell any of its
stock or other equity interests, and, there are no registration covenants or
transfer or voting restrictions with respect to outstanding securities of any of
the Company's subsidiaries.

              (i) Since February 16, 1996, the Company has filed with the SEC
all forms, statements, reports and documents it has been required to file under
the Securities Act of 1993, as amended, the Exchange Act or the rules under
them.

              (j) The Company's Annual Report on Form 10-K for the year ended
March 31, 1998 (the "1998 10-K") and its Report on Form 10-Q for the period
ended September 30, 1998 (the "September 10-Q") which were filed with the
Securities and Exchange Commission, including the documents incorporated by
reference in each of them, each contained all the information required to be
included in it and, when it was filed, did not contain an untrue statement of a
material fact or omit to state a material fact necessary in order to make the
statements made in it, in light of the circumstances under which they were made,
not misleading. Without limiting what is said in the preceding sentence, the
financial statements included in the 1998 10-K all were prepared, and the
financial information included in the 


                                       19
<PAGE>   24
September 10-Q was derived from financial statements which were prepared, in
accordance with United States generally accepted accounting principles ("GAAP")
applied on a consistent basis (except that financial information included in the
September 10-Q does not contain notes and is subject to normal year end
adjustments) and presented fairly the consolidated financial condition and the
consolidated results of operations of the Company and its subsidiaries at the
dates, and for the periods, to which they relate. The Company has not filed any
reports with the Securities and Exchange Commission with regard to any period
which ended, or any event which occurred, after September 30, 1998, except a
Form 8-A which the Company filed on November 25, 1998 and a Form 8-K which the
Company filed on December 21, 1998.

              (k) Between September 30, 1998 and the date of this Agreement, (i)
the Company and its subsidiaries have conducted their businesses in the ordinary
course and in the same manner in which they were conducted prior to September
30, 1998, and (ii) nothing has occurred which, individually or in aggregate, has
had a Material Adverse Effect on the Company and its subsidiaries taken as a
whole.

              (l) The assets of the Company and its subsidiaries at the date of
this Agreement constitute, in the aggregate, all the assets (including, but not
limited to, intellectual property rights) used in or necessary to the conduct of
their businesses as they are being conducted at the date of this Agreement.

              (m) The Company and it subsidiaries have at all times prior to the
date of this Agreement complied, and at the date of this Agreement are
complying, with all applicable Federal, state, local and foreign laws and
regulations, except failures to comply which would not reasonably be expected,
in the aggregate, to have a Material Averse Effect on the Company.

              (n) At the date of this Agreement, the Company and each of its
subsidiaries has all licenses and permits which are required at the date of this
Agreement to enable them to 


                                       20
<PAGE>   25
conduct their businesses as they currently are being conducted, except licenses
or permits the lack of which would not reasonably be expected, in the aggregate,
to have a Material Adverse Effect on the Company.

              (o) The Company and each of its subsidiaries has filed when due
all Tax Returns which it has been required to file and has paid all Taxes shown
on those returns to be due. Those Tax Returns accurately reflect all Taxes
required to have been paid, except to the extent of items which may be disputed
by applicable taxing authorities but for which there is substantial authority to
support the position taken by the Company or the subsidiary and which have been
adequately reserved against in accordance with GAAP on the balance sheet at
September 30, 1998 included in the September 10-Q. Except as shown on Exhibit
4.2-O, (i) no extension of time given by the Company or any of its subsidiaries
for completion of the audit of any of its Tax Returns is in effect, (ii) no tax
lien has been filed by any taxing authority against the Company or any of its
subsidiaries or any of their assets, (iii) no Federal, state or local audits or
other administrative proceedings or court proceedings with regard to Taxes are
presently pending with regard to the Company or any of its subsidiaries, (iv)
neither the Company nor any subsidiary is a party to any agreement providing for
the allocation or sharing of Taxes, (v) neither the Company nor any subsidiary
has participated in or cooperated with an international boycott as that term is
used in Section 999 of the Internal Revenue Code of 1986, as amended (the
"Code") and (vi) neither the Company nor any subsidiary has filed a consent
pursuant to Section 341(f) of the Code or agreed to have Section 341(f)(2) of
the Code apply to any disposition of a Subsection (f) asset (as that term is
defined in Section 341(f)(4) of the Code) owned by the Company or any
subsidiary. For the purposes of this Agreement, the term "Taxes" means all taxes
(including, but not limited to, withholding taxes), assessments, fees, levies
and other governmental charges, and any related interest or penalties. For the
purposes 


                                       21
<PAGE>   26
of this Agreement, the term "Tax Return" means any report, return or other
information required to be supplied to a taxing authority in connection with
Taxes.

              (p) Except as shown on Exhibit 4.2-P, neither the Company nor any
subsidiary has received any notice of material non-compliance or material
liability under any Federal, state or local environmental laws or regulations
relating to real property owned or leased by the Company or by a subsidiary.

              (q) Neither the Schedule 14D-9 nor any information supplied by the
Company for inclusion in the Offering Documents will, at the respective times
the Schedule 14D-9 and the Schedule 14D-1 are filed with the SEC and first
published, sent or given to the Company's stockholders, contain a false or
misleading statement with respect to any material fact or omit to state any
material fact required to be stated therein or necessary in order to make the
statements therein, in light of the circumstances under which they are made, not
misleading. On the day the Proxy Statement is mailed to the Company's
stockholders and on the day of the Stockholders Meeting, the Proxy Statement
will not contain a false or misleading statement with respect to any material
fact or omit to state any material fact required to be stated therein or
necessary in order to make the statements therein, in light of the circumstances
under which they are made, not misleading or necessary to correct any statement
in any earlier communication with respect to the Stockholders Meeting or the
solicitation of proxies to be used at the Stockholders Meeting. However, the
Company does not make any representations or warranties with respect to
information supplied by Acquisition or any of its affiliates or representatives
for inclusion in the Schedule 14D-9 or the Proxy Statement, or with respect to
the Offering Documents (except to the extent of information supplied by the
Company for inclusion in the Offering Documents). The Schedule 14D-9 and Proxy
Statement will comply as to form in all material respects with the requirements
of the Exchange Act and the rules under it.


                                       22
<PAGE>   27

         4.3 Termination of Representations and Warranties. The representations
and warranties in Paragraphs 4.1, 4.2 and 8.1 will terminate at the Expiration
Date, and neither the Company nor Acquisition, nor any of their respective
stockholders, will have any rights or claims as a result of any of those
representations or warranties after the Expiration Date.

                                   ARTICLE 5

                           ACTIONS PRIOR TO THE MERGER

         5.1 Activities Until Effective Time. From the date of this Agreement to
the Effective Time, except as described on Exhibit 5.1, the Company will, and
will cause each of its subsidiaries to, except with the written consent of
Acquisition and the Company:

             (a) Operate its business in the ordinary course and in a manner
consistent with the manner in which it is being operated at the date of this
Agreement.

             (b) Take all reasonable steps available to it to maintain the
goodwill of its business and, except as otherwise requested by Acquisition, the
continued employment of its executives and other employees.

             (c) At its expense, maintain all its assets in good repair and
condition, except to the extent of reasonable wear and use and damage by fire or
other unavoidable casualty.

             (d) Not make any borrowings other than borrowings in the ordinary
course of business under working capital lines which are disclosed in the notes
to the consolidated balance sheet at March 31, 1998 included in the 1998 10-K or
the consolidated balance sheet at September 30, 1998 included in the September
10-Q.

             (e) Not enter into any contractual commitments involving capital
expenditures, loans or advances, and not voluntarily incur any contingent
liabilities, except in each case in the ordinary course of business.

                                       23
<PAGE>   28
             (f) Not redeem or purchase any of its stock and not declare or pay
any dividends, or make any other distributions or repayments of debt to its
stockholders (other than payments by subsidiaries of the Company to the Company
or to other wholly owned subsidiaries of the Company).

             (g) Not make any loans or advances (other than advances for travel
and other normal business expenses) to stockholders, directors, officers or
employees.

             (h) Maintain its books of account and records in the usual manner,
in accordance with GAAP applied on a consistent basis, subject to normal
year-end adjustments and accruals.

             (i) Comply in all material respects with all applicable laws and
regulations of governmental agencies.

             (j) Not sell, dispose of or encumber any property or assets, or
engage in any activities or transactions, except in each case in the ordinary
course of business.

             (k) Not enter into or amend any employment, severance or similar
agreements or arrangements, or increase the salaries of any employees, other
than through normal annual merit increases averaging not more than 10%.

             (l) Not adopt, become an employer with regard to, or amend any
employee compensation, employee benefit or post-employment benefit plan.

             (m) Not amend its certificate of incorporation or by-laws.

             (n) Not (i) issue or sell any of its stock (except upon exercise of
options which are outstanding on the date of this Agreement) or any options,
warrants or convertible or exchangeable securities or (ii) split, combine, or
reclassify its outstanding stock.

                                       24
<PAGE>   29
             (o) Not authorize or enter into any agreement to take any of the
actions referred to in subparagraphs (a ) through (n) above.

         5.2 HSR Act Filings. The Company and Acquisition will each make as
promptly as practicable the filing it is required to make under the HSR Act with
regard to the transactions which are the subject of this Agreement and each of
them will take all reasonable steps within its control (including providing
information to the Federal Trade Commission and the Department of Justice) to
cause the waiting periods required by the HSR Act to be terminated or to expire
as promptly as practicable. The Company and Acquisition will each provide
information and cooperate in all other respects to assist the other of them in
making its filing under the HSR Act.

         5.3 Proxy Statements and Stockholders' Meetings

             (a) If the conditions in clauses (a) and (b) of Paragraph 2.1 are
satisfied and stockholder approval of the Merger is required by applicable law
or by rules of the Nasdaq National Market (if they are applicable), the Company
will (i) file the Proxy Statement with the SEC as promptly as practicable after
the Expiration Date, (ii) use its best efforts to cause review of the Proxy
Statement by the SEC staff to be completed as promptly as practicable, (iii)
recommend to its stockholders that they vote in favor of the Merger and permit
that recommendation to be described in the Proxy Statement, (iv) as promptly as
practicable, and in any event within 10 days after the Company is informed that
the SEC staff has no further comments about the Proxy Statement, cause the Proxy
Statement to be mailed to its stockholders and (v) cause the Stockholders
Meeting to be held not later than the 30th day after the day on which the Proxy
Statement is mailed.

             (b) Acquisition will (i) supply to the Company all information in
Acquisition's possession, including any required financial statements of
Acquisition, which the Company is 


                                       25
<PAGE>   30
required to include in the Proxy Statement and in all other respects cooperate
with the Company in its efforts to file the Proxy Statement with the SEC and
cause review of the Proxy Statement to be completed as promptly as practicable
after it is filed with the SEC.

         5.4 No Solicitation of Offers; Notice of Proposals from Others. (a) The
Company will not, and will not authorize or permit its or any of its
subsidiaries' officers, directors, employees, agents or representatives
(including any investment banker, attorney or accountant retained by it or by
any of its subsidiaries) directly or indirectly to initiate, solicit, encourage
or otherwise facilitate any inquiry or the making of any proposal or offer with
respect to a merger, reorganization, share exchange, consolidation or similar
transaction involving the Company, or any purchase of or tender offer for, all
or any significant portion of the Company's equity securities or any significant
portion of the assets of the Company and its subsidiaries on a consolidated
basis (each of these being an "Acquisition Proposal").

             (b) Subparagraph (a) will not prevent the Company from, in response
to an Acquisition Proposal which the Company receives despite complying with
subparagraph (a) and which the Company's Board determines, in good faith after
consultation with its independent financial advisor, would result (if
consummated in accordance with its terms) in a transaction which (i) would
result in the Company's stockholders' receiving cash consideration which is
substantially greater than the Tender Offer Price and (ii) would be more
favorable to the Company's stockholders than the Tender Offer and the Merger,
furnishing non-public information to the person, entity or group (the "Potential
Acquiror") which makes the Acquisition Proposal and entering into discussions
and negotiations with the Potential Acquiror.

             (c) If the Company receives an Acquisition Proposal, or the Company
learns that someone other than Acquisition is contemplating soliciting tenders
of Common Stock or otherwise proposes to acquire the Company or its Common Stock
if the Company's 


                                       26
<PAGE>   31
stockholders do not tender their Common Stock to Acquisition or do not approve
the Merger, the Company will promptly notify Acquisition of that fact and
provide Acquisition with all information in the Company's possession which
Acquisition reasonably requests regarding the Acquisition Proposal, solicitation
of tenders or other proposed transaction, and the Company will promptly, from
time to time, provide Acquisition with any additional information the Company
obtains regarding the Acquisition Proposal, the solicitation of tenders or the
other proposed transaction.

         5.5 Acquisition's Efforts to Fulfill Conditions. Acquisition will use
its best efforts to cause all the conditions set forth in Paragraph 6.1 to be
fulfilled on or before the Merger Date.

         5.6 Company's Efforts to Fulfill Conditions. The Company will use its
best efforts to cause all the conditions set forth in Paragraph 6.2 to be
fulfilled on or before the Merger Date.

                                   ARTICLE 6

                         CONDITIONS PRECEDENT TO MERGER

         6.1 Conditions to the Company's Obligations. The obligations of the
Company to complete the Merger are subject to satisfaction of the following
conditions (any or all of which may be waived by the Company):

             (a) The representations and warranties of Acquisition contained in
this Agreement will, except as contemplated by this Agreement, be true and
correct in all material respects on the Merger Date with the same effect as
though made on that date (except that representations or warranties which
related expressly to a specified date or a specified period need only to have
been true and correct with regard to the specified date or period), and
Acquisition will have delivered to the Company a certificate dated that date and
signed by the President or a Vice President of Acquisition to that effect.

                                       27
<PAGE>   32
             (b) Acquisition will have fulfilled in all material respects all
its obligations under this Agreement required to have been fulfilled on or
before the Merger Date.

             (c) No order will have been entered by any court or governmental
authority and be in force which invalidates this Agreement or restrains the
Company from completing the transactions which are the subject of this Agreement

             (d) If stockholder approval of the Merger is required by applicable
law or by the rules of the Nasdaq National Market (if they are applicable), the
Merger will have been approved by the holders of a majority of the outstanding
shares of Common Stock.

         6.2 Conditions to Acquisition's Obligations. The obligations of
Acquisition to complete the Merger are subject to the following conditions (any
or all of which may be waived by Acquisition):

             (a) The representations and warranties of the Company contained in
this Agreement will, except as contemplated by this Agreement, be true and
correct in all material respects on the Merger Date with the same effect as
though made on that date (except that representations or warranties which
related expressly as of a specified date or a specified period need only to have
been true and correct with regard to the specified date or period), and the
Company will have delivered to Acquisition a certificate dated that date and
signed by the President or a Vice President of the Company to that effect.

             (b) The Company will have fulfilled in all material respects all
its obligations under this Agreement required to have been fulfilled on or
before the Merger Date.

             (c) No order will have been entered by any court or governmental
authority and be in force which invalidates this Agreement or restrains
Acquisition from completing the transactions which are the subject of this
Agreement and no action will be pending against the 


                                       28
<PAGE>   33
Company or Acquisition relating to the transactions which are the subject of
this Agreement which presents a reasonable likelihood of resulting in an award
of damages against the Company or Acquisition which would be material after the
Merger to the Company and its subsidiaries taken as a whole.

             (d) J. William Uhrig and Wm. Robert Wright III (or replacements
designated by Acquisition) will have been members of the Board at all times
since this Agreement was signed by the Company and by Acquisition.

             (e) If stockholder approval of the Merger is required by applicable
law or by the rules of the Nasdaq National Market (if they are applicable), the
Merger will have been approved by the holders of at least a majority of the
outstanding shares of Common Stock.

             (f) If stockholder approval of the Merger is required by applicable
law or by the rules of the Nasdaq National Market (if they are applicable), the
Effective Time will occur not later than 120 days after the Expiration Time,
unless the Effective Time is delayed until after then because of actions of
Acquisition or its affiliates (other than the Company and its subsidiaries) or
because of Acquisition's failure to fulfill obligations under this Agreement.

                                    ARTICLE 7

                                   TERMINATION

         7.1 Right to Terminate. This Agreement may be terminated at any time
prior to the Effective Time (whether or not the Company's stockholders have
approved the Merger):

             (a) By mutual consent of the Company and Acquisition.

             (b) By Acquisition if the condition in Paragraph 6.2(f) is not
fulfilled.

                                       29
<PAGE>   34
             (c) By the Company if (i) it is determined that any of the
representations or warranties of Acquisition contained in this Agreement was not
complete and accurate in all material respects on the date of this Agreement or
(ii) any of the conditions in Paragraph 6.1 is not satisfied or waived by the
Company on or before the Merger Date.

             (d) By Acquisition if (i) it is determined that any of the
representations or warranties of the Company contained in this Agreement was not
complete and accurate in all material respects on the date of this Agreement or
(ii) any of the conditions in Paragraph 6.2 is not satisfied or waived by
Acquisition on or before the Merger Date.

             (e) By the Company if (i) it receives a Superior Proposal within 20
business days after the Schedule 14D-1 is filed with the SEC, (ii) within 10
business days after the Company receives the Superior Proposal, the Company's
Board of Directors resolves to accept the Superior Proposal unless Acquisition
will increase the Tender Offer Price to an amount at least as great as the
amount of cash per shares the Company's stockholders would receive as a result
of the Superior Proposal, and (iii) the Company has given Acquisition at least
10 business days' prior notice (A) of the terms of the Superior Proposal
(including the amount of cash per share the Company's stockholders would receive
as a result of the Superior Proposal), and (B) that unless Acquisition increases
the Tender Offer Price to an amount at least as great as the cash per share the
Company's stockholders would receive as a result of the Superior Proposal, this
Agreement will terminate on a day specified in the notice, which will be after
the expiration of the 10 business day period, (iv) Acquisition does not, by the
termination date specified in the notice, increase the Tender Offer Price to an
amount at least as great as the cash per share the Company's stockholders will
receive as a result of the Superior Proposal, as set forth in the notice, and
(v) the Company has (x) paid Acquisition $1,720,000 (y) reimbursed Acquisition
for all the expenses related to the transactions which are the subject of this
Agreement which Acquisition or its affiliates (including the Three Cities Funds)
incurred after December 17, 1998 


                                       30
<PAGE>   35
(including fees and expenses of lawyers and accountants for work performed after
December 17, 1998) regarding which Acquisition has presented reasonable
documentation to the Company, and (z) agreed in writing to reimburse Acquisition
for all expenses of the type described in clause (y) for which Acquisition has
not been reimbursed for which Acquisition subsequently presents the Company
reasonable documentation (up to a total reimbursement of expenses under clauses
(y) and (z) not exceeding $200,000). A "Superior Proposal" is an all cash
Acquisition Proposal which (x) would result in the Company's stockholders'
receiving cash consideration which is substantially greater than the Tender
Offer Price, (y) is not subject to a financing contingency and is from a
Proposed Acquiror which the Board determines in good faith after consultation
with its independent financial advisor has the financial resources necessary to
carry out the transaction and (z) the Board determines in good faith after
consultation with its independent financial advisor to be more favorable to the
Company's stockholders than the Tender Offer and the Merger. A notice that this
Agreement will terminate given pursuant to clause (iii) of the first sentence of
this subparagraph will be irrevocable (unless Acquisition consents in writing to
its being withdrawn by the Company) and will result in this Agreement's
terminating on the later of the date specified in the notice or the date the
Company makes the payments and provides the agreement described in clause (v) of
the first sentence of this subparagraph. When the Company delivers a notice
pursuant to clause (iii) of the first sentence of this subparagraph,
Acquisition's obligations under Paragraphs 5.2 and 5.3 will terminate.

             (f) By the Company if (i) within 20 business days after the
Schedule 14D-1 is filed with the SEC, a Potential Acquiror commences an all cash
tender offer for any and all the outstanding shares of the Company's Common
Stock for cash consideration which is substantially greater than the Tender
Offer Price, (ii) the Board determines in good faith after consultation with its
independent financial advisor that the Potential Acquiror's tender offer


                                       31
<PAGE>   36
constitutes a Superior Proposal and resolves to recommend to the Company's
stockholders that they tender their shares in response to that Superior
Proposal, (iii) the Company has given Acquisition at least 10 business days'
prior notice (A) of the terms of the tender offer which is a Superior Proposal,
and (B) that, unless Acquisition increases the Tender Offer Price to an amount
at least as great as the cash consideration offered in the tender offer which is
a Superior Proposal, this Agreement will terminate on a date specified in the
notice, which will be after the expiration of the 10 business day period, (iv)
Acquisition does not, by the termination date specified in the notice, increase
the Tender Offer Price to an amount at least as great as the cash consideration
offered in the tender offer which is a Superior Proposal, and (v) the Company
has (x) paid Acquisition $1,720,000, (y) reimbursed Acquisition for all the
expenses related to the transactions which are the subject of this Agreement
which Acquisition or its affiliates (including the Three Cities Funds) incurred
after December 17, 1998 (including fees and expenses of lawyers and accountants
for work performed after December 17, 1998) regarding which Acquisition has
presented reasonable documentation to the Company and (z) agreed in writing to
reimburse Acquisition for all expenses of the type described in clause (y) for
which Acquisition has not been reimbursed for which Acquisition subsequently
presents the Company reasonable documentation (up to a total reimbursement of
expenses under clauses (y) and (z) not exceeding $200,000). A notice that this
Agreement will terminate given pursuant to clause (iii) of the first sentence of
this subparagraph will be irrevocable (unless Acquisition consents in writing to
its being withdrawn by the Company) and will result in this Agreement's
terminating on the later of the date specified in the notice or the date the
Company makes the payments and provides the agreement described in clause (v) of
the first sentence of this subparagraph. When the Company delivers a notice of
intention to terminate pursuant to this Paragraph, Acquisition's obligations
under Paragraphs 5.2 and 5.3 will terminate.

                                       32
<PAGE>   37
         7.2 Manner of Terminating Agreement. If at any time the Company has the
right under Paragraph 7.1 to terminate this Agreement, it can terminate this
Agreement by a notice to the other of them that it is terminating this
Agreement.

         7.3 Effect of Termination. If this Agreement is terminated pursuant to
Paragraph 7.1, after this Agreement is terminated, neither party will have any
further rights or obligations under this Agreement other than the Company's
obligations under the agreement to reimburse expenses described in paragraph 7.2
and Acquisition's obligations under Paragraphs 9.1, 9.2 and 9.4. Nothing
contained in this Paragraph will, however, relieve either party of liability for
any breach of this Agreement which occurs before this Agreement is terminated.

                                   ARTICLE 8

                               ABSENCE OF BROKERS

         8.1 Representations and Warranties Regarding Brokers and Others. The
Company and Acquisition each represents and warrants to the other of them that
nobody acted as a broker, a finder or in any similar capacity in connection with
the transactions which are the subject of this Agreement, except that Lehman
Brothers, Inc. acted as financial advisor to the Company and Sanders Morris
Mundy & Co. has assisted the Three Cities Funds in connection with the purchases
of Common Stock from the Funds. The Company will pay all fees of Lehman
Brothers, Inc. (which will not exceed $900,000) and reimbursement of Lehman
Brothers, Inc. for out-of-pocket expenses (which will not exceed $25,000) and
the Three Cities Funds will pay all fees of Sanders Morris Mundy & Co. The
Company and Acquisition each indemnifies the other of them against, and agrees
to hold the other of them harmless from, all losses, liabilities and expenses
(including, but not limited to, reasonable fees and expenses of counsel and
costs of investigation) incurred because of any claim by anyone for compensation
as a broker, a finder or in any similar capacity by reason of services allegedly
rendered to the indemnifying party in connection with the transactions which are
the subject of this Agreement.

                                       33
<PAGE>   38
                                   ARTICLE 9

                                OTHER AGREEMENTS

         9.1 Indemnification for Prior Acts. (a) The Surviving Corporation will
honor, and will not amend or modify for a period of not less than six years
after the date of this Agreement, any and all obligations of the Company and its
subsidiaries to indemnify present and former directors, officers or employees of
the Company or its subsidiaries (each an "Indemnified Party") with respect to
matters which occur on or prior to the Effective Time, whether provided in the
certificate of incorporation or by-laws of the Company or any of its
subsidiaries, in any of the agreements listed on Exhibit 9.1-A(1) or under the
DGCL. The Surviving Corporation will, maintain in effect for not less than six
years after Effective Time with respect to occurrences prior to the Effective
Time the Company's policies of directors and officers' liability insurance which
are in effect on the date of this Agreement and are listed on Exhibit 9.1-A(2)
(notwithstanding any provisions of those policies that they will terminate as a
result of Merger) to the extent that such insurance (or substantially similar
insurance) is available.

             (b) Without limiting the foregoing, in the event any indemnified
claim ("Claim") is brought against any Indemnified Party after the Effective
Time, (i) the Indemnified Parties may retain the Company's regularly engaged
independent legal counsel, or other independent legal counsel satisfactory to
them and to the Surviving Corporation, (ii) the Surviving Corporation shall pay
all reasonable fees and expenses of counsel for the Indemnified Parties as
described below promptly as statements therefor are received and (iii) the
Surviving Corporation will use its best efforts to assist in the vigorous
defense of any such matter, provided that the Surviving Corporation shall not be
liable for any settlement of any Claim effected without its written consent,
which consent shall not be unreasonably withheld. Any Indemnified Party wishing
to claim indemnification with regard to a Claim, upon learning of the Claim,
shall notify the Surviving Corporation of the Claim (although the failure so to
notify the Surviving Corporation



                                       34
<PAGE>   39
shall not relieve the Surviving Corporation from any liability which the
Surviving Corporation may have, except to the extent such failure materially
prejudices the Surviving Corporation), and shall deliver to the Surviving
Corporation the undertaking contemplated by Section 145(e) of the DGCL. The
Indemnified Parties as a group may retain one law firm (in addition to local
counsel) to represent them with respect to each such matter unless there is,
under applicable standards of professional conduct (as determined by counsel to
the Indemnified Parties), a conflict on any significant issue between the
positions of any two or more Indemnified Parties, in which event, such
additional counsel as may be required may be retained by the Indemnified
Parties. The Company will pay the fees and expenses of the one law firm (plus
local counsel) and, if there is a conflict as described in the preceding
sentence, fees and expenses of one additional law firm (plus local counsel).
Under no circumstances will the Company be required to pay the fees and expenses
of more than two law firms (plus local counsel) with regard to any Claim or
group of related Claims.

             (c) The provisions of this Paragraph 9.1 are intended to be for the
benefit of, and will be enforceable by, the respective directors, officers and
employees of the Company or its subsidiaries to which it relates and their heirs
and representatives and will be binding upon the Surviving Corporation.

         9.2 Agreement Not To Merge Under Certain Conditions. If Acquisition
purchases all the shares which are property tendered in response to the Tender
Offer and not withdrawn, and after that purchase, the number of shares of Common
Stock which are owned by Acquisition, the Three Cities Funds and any other
stockholders of Acquisition, totals less than 85% of the Common Stock which is
outstanding at the Expiration Time, neither Acquisition nor either of the Three
Cities Funds will engage in a business combination (as that term is defined in
Section 203 of the DGCL) with the Company for a period of three years following
the Expiration Time, unless the business combination has been approved by the
Company's Board of Directors and 


                                       35
<PAGE>   40
authorized at an annual or special meeting of stockholders, and not by written
consent, by the affirmative vote of at least 662/3% of the outstanding Common
Stock which is not owned by Acquisition or an affiliate of Acquisition (as the
term "affiliate" is defined in Section 203 of the DGCL, but excluding from the
definition of "affiliate" any person which is an affiliate of Acquisition solely
because that person owns shares of the Company).

         9.3 Agreement Regarding Directors. Until Acquisition purchases all the
shares of Common Stock which are properly tendered in response to the Tender
Offer and not withdrawn or this Agreement terminates, neither of the Three
Cities Funds nor Acquisition will vote any Common Stock or take any other action
to cause (i) anyone other than J. William Uhrig and Wm. Robert Wright III (or
replacements for them designated by Acquisition) to be elected to the Board
(except by voting at an annual meeting of stockholders in favor of the Board's
nominees for election to the Board), (ii) the number of directors constituting
the entire Board to be increased or decreased, or (iii) any director to be
removed from the Board other than for cause.

         9.4 Agreement to Vote or Sell Shares. If the Company terminates this
Agreement under subparagraph (e) or (f) of paragraph 7.1 because of a Superior
Proposal, and the Company has complied with all the requirements of the
applicable one of those subparagraphs (including the requirements regarding
payments to Acquisition), at the request of the Board, (a) if the Superior
Proposal requires a vote of the holders of the Common Stock, Acquisition will,
and will cause the Three Cities Funds to, vote all the Common Stock they own or
have the power to vote (including the Common Stock the Three Cities Funds
purchase from the Funds, to the extent Acquisition or the Three Cities Funds
still own that Common Stock) in favor of the Superior Proposal or (b) if the
Superior Proposal is a tender offer, Acquisition will, and will cause the Three
Cities Funds to, tender in response to the tender offer all the Common Stock
they own when the tender offer expires (including all the Common Stock the Three
Cities Funds purchased from the Funds which they still own when the tender offer
expires).

                                       36
<PAGE>   41
         9.5 Control of Stockholder Suits. At least until the Expiration Date,
the Company, under the direction of the Board, will control any and all
negotiations and decisions with respect to the Stockholder Suits, and
Acquisition will not, and will cause the Three Cities Funds not to, communicate
about the Stockholder Suits with counsel for the plaintiffs in the Stockholder
Suits, the Company's insurance carriers or their counsel, or any other party
involved in the Stockholder Suits, without the express prior consent of the
Company or its counsel.


                                   ARTICLE 10

                                     GENERAL

         10.1 Expenses. The Company and Acquisition will each pay its own
expenses in connection with the transactions which are the subject of this
Agreement, including legal fees.

         10.2 Access to Properties, Books and Records. From the date of this
Agreement until the Effective Time, the Company will, and will cause each of its
subsidiaries to, give representatives of Acquisition full access during normal
business hours to all of their respective properties, books and records.
Acquisition will, and will cause its representatives to, hold all information it
receives as a result of its access to the properties, books and records of the
Company or its subsidiaries in confidence, except to the extent that information
(i) is or becomes available to the public (other than through a breach of this
Agreement), (ii) becomes available to Acquisition from a third party which,
insofar as Acquisition is aware, is not under an obligation to the Company, or
to a subsidiary of the Company, to keep the information confidential, (iii) was
known to Acquisition or its affiliates (which includes the Three Cities Funds
and Three Cities Research, Inc.) before it was made available to Acquisition or
its representative by the Company or a subsidiary, or (iv) otherwise is
independently developed by Acquisition or its affiliates. If this Agreement is
terminated prior to the Effective Time, Acquisition will, at the request of the
Company, deliver to the Company all documents and other 


                                       37
<PAGE>   42
material obtained by Acquisition from the Company or a subsidiary in connection
with the transactions which are the subject of this Agreement or evidence that
that material has been destroyed by Acquisition.

         10.3 Press Releases. The Company and Acquisition will consult with each
other before issuing any press releases or otherwise making any public
statements with respect to this Agreement, except that nothing in this Paragraph
will prevent either party from making any statement when and as required by law
or by the rules of any securities exchange or securities quotation or trading
system on which securities of that party or an affiliate are listed, quoted or
traded.

         10.4 Entire Agreement. This Agreement and the documents to be delivered
in accordance with this Agreement contain the entire agreement between the
Company and Acquisition relating to the transactions which are the subject of
this Agreement and those other documents, all prior negotiations, understandings
and agreements between the Company and Acquisition are superseded by this
Agreement and those other documents, and there are no representations,
warranties, understandings or agreements concerning the transactions which are
the subject of this Agreement or those other documents other than those
expressly set forth in this Agreement or those other documents.

         10.5 Effect of Disclosures. Any information disclosed by a party in any
representation or warranty contained in this Agreement (including exhibits to
this Agreement) will be treated as having been disclosed in connection with each
representation and warranty made by that party in this Agreement.

         10.6 Captions. The captions of the articles and paragraphs of this
Agreement are for reference only, and do not affect the meaning or
interpretation of this Agreement.

                                       38
<PAGE>   43
         10.7 Prohibition Against Assignment. Neither this Agreement nor any
right of any party under it may be assigned, except that Acquisition may assign
its rights under this Agreement to a corporation or other entity a majority of
the equity of which is owned by the Three Cities Funds.

         10.8 Notices and Other Communications. Any notice or other
communication under this Agreement must be in writing and will be deemed given
when it is delivered in person or sent by facsimile (with proof of receipt at
the number to which it is required to be sent), on the business day after the
day on which it is sent by a major nationwide overnight delivery service, or on
the third business day after the day on which it is mailed by first class mail
from within the United States of America, to the following addresses (or such
other address as may be specified after the date of this Agreement by the party
to which the notice or communication is sent):

         If to Acquisition:

                  TCF Acquisition Corporation
                  c/o Three Cities Research, Inc.
                  650 Madison Avenue
                  New York, New York
                  Attention:        J. William Uhrig
                  Facsimile:        212-980-1142

         with a copy to:

                  David W. Bernstein
                  Rogers & Wells LLP
                  200 Park Avenue
                  New York, New York  10166
                  Facsimile:        212-878-8375



                                       39
<PAGE>   44
         If to the Company.:

                  COHR Inc.
                  2540 Plummer Street
                  Chatsworth, CA 91311
                  Attention:  President
                  Facsimile:  818-717-8426

         with a copy to:

                  Robert B. Knauss
                  Munger Tolles & Olson LLP
                  355 South Grand Avenue
                  Los Angeles, CA  90071
                  Facsimile No.:213-687-3702


                                       40
<PAGE>   45
         10.9 Governing Law. This Agreement will be governed by, and construed
under, the substantive laws of the State of Delaware.

         10.10 Amendments. This Agreement may be amended only by a document in
writing signed by both the Company and Acquisition.

         10.11 Counterparts. This Agreement may be executed in two or more
counterparts, some of which may be signed by fewer than all the parties or may
contain facsimile copies of pages signed by some of the parties. Each of those
counterparts will be deemed to be an original copy of this Agreement, but all of
them together will constitute one and the same agreement.

             IN WITNESS WHEREOF, the Company and Acquisition have executed this
Agreement, intending to be legally bound by it, on the day shown on the first
page of this Agreement. 


                                          COHR INC.

                                          By:                
                                            --------------------------------
                                          Title:


                                          TCF ACQUISITION CORPORATION


                                          By:          
                                            --------------------------------
                                          Title: President


                                       41
<PAGE>   46
                                  Exhibit 1.1-E

         Acquisition will not be required to accept for payment or pay for any
Common Stock tendered in response to the Tender Offer if:

         (a) Any statute, rule, regulation, order or injunction has been
enacted, promulgated, entered or enforced by any national or state government or
governmental authority or by any United States court of competent jurisdiction,
that would make the acquisition of the tendered Common Stock by Acquisition
illegal or otherwise prohibit consummation of the Tender Offer or the Merger; or

         (b) There has been (i) a general suspension of trading in, or
limitation on prices for, securities on the New York Stock Exchange or the
Nasdaq National Market System which continued for at least three business days,
(ii) the declaration of a banking moratorium or any suspension of payments in
respect of banks in the United States (whether or not mandatory) which continued
for at least three business days, (iii) the commencement of a war or armed
hostilities or any other international or national calamity directly or
indirectly involving the United States, which has a significant adverse effect
on the functioning of financial markets in the United States, (iv) any
limitation (whether or not mandatory) by any United States governmental
authority or agency on the extension of credit by banks or other financial
institutions which would have a material adverse effect on Acquisition's ability
to purchase and pay for all the Common Stock which is tendered in response to
the Tender Offers and to carry out the Merger on the terms contemplated by the
Agreement or (v) there is a material acceleration or worsening of any of the
conditions described in clauses (i) through (iv) which exists at the date of the
commencement of the Tender Offer.

         (c) Any of the representations or warranties of the Company in the
Agreement is not true and correct as of the date of the Agreement, except
failures to be true and correct which would not, in the aggregate, have a
Material Adverse Effect upon the Company or adversely affect Acquisition's legal
ownership of the tendered Common Stock, Acquisition's legal ability to
consummate the Merger as contemplated by the Agreement, or the ownership of the
Surviving Corporation after the Merger by the persons which own the stock of
Acquisition immediately before the Merger;

         (d) Without limiting the condition in subparagraph (c), Acquisition
learns that the 1998 10-K or the September 10-Q contained a false or misleading
statement with respect to a material fact or omitted to state a material fact
required to be stated therein or which may be necessary to make the statements
therein, in the light of the circumstances under which they were made, not
misleading (other than with regard to matters which are the subject of the
Stockholder Suits);

         (e) The Company has not performed all the obligations it is required to
have performed under the Agreement by the Expiration Date, except failures which
(i) would, in the aggregate, not materially impair or delay the ability of
Acquisition to consummate the purchase of the Common Stock which is tendered in
response to the Tender Offer or the ability of Acquisition and the Company to
effect the Merger, (ii) have been caused by or result from a breach of the
Agreement by Acquisition; or (iii) do not, and are not reasonably expected to,
have a Material Adverse Effect on the Company.

         (f) The Agreement has been terminated in accordance with its terms; or

                                       3
<PAGE>   47
         (g) The Board withdraws or modifies in a manner adverse to Acquisition
the Board's approval or recommendation of the Tender Offer or the Merger.

         The conditions set forth above are for the sole benefit of Acquisition,
and may be waived by Acquisition, in whole or in part. Any delay by Acquisition
in exercising the right to terminate the Tender Offer because any of the
conditions are not fulfilled will not be deemed a waiver of its right to do so.


                                       4

<PAGE>   1
                                    EXHIBIT B

                             JOINT FILING AGREEMENT

         In accordance with Rule 13d-1(f) under the Securities Exchange Act of
1934, as amended, the persons named below agree to the joint filing on behalf of
each of them of a Statement on Schedule 13D (including amendments thereto) with
respect to the Common Stock, par value $0.01 per Share, of COHR Inc. and further
agree that this Joint Filing Agreement be included as an Exhibit to such joint
filings. In evidence thereof, the undersigned, being duly authorized, have
executed this Joint Filing Agreement this 3rd day of January 1999.

                                   THREE CITIES OFFSHORE II C.V.

                                   By:   TCR Offshore Associates, L.P.
                                         its General Partner

                                         By:   Three Cities Associates, N.V.,
                                               its General Partner

                                               By:    /s/   J. William Uhrig
                                                     ---------------------------
                                                     Name:  J. William Uhrig
                                                     Title: President



                                   THREE CITIES FUND II, L.P.

                                   By:   TCR Associates, L.P.,
                                         its General Partner

                                         By:   Three Cities Research, Inc.,
                                               its General Partner

                                               By:    /s/   Willem F.P. de Vogel
                                                     ---------------------------
                                                     Name:  Willem F.P. de Vogel
                                                     Title: President

                                   THREE CITIES RESEARCH, INC.

                                         By:    /s/   Willem F.P. de Vogel 
                                               ---------------------------------
                                               Name:  Willem F.P. de Vogel
                                               Title: President




<PAGE>   2
                                   SIGNATURES


         After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

Dated: January 3, 1999

                                   THREE CITIES OFFSHORE II C.V.

                                   By:   TCR Offshore Associates, L.P.
                                         its General Partner

                                         By:   Three Cities Associates, N.V.,
                                               its General Partner

                                               By:    /s/   J. William Uhrig
                                                     ---------------------------
                                                     Name:  J. William Uhrig
                                                     Title: President



                                   THREE CITIES FUND II, L.P.

                                   By:   TCR Associates, L.P.,
                                         its General Partner

                                         By:   Three Cities Research, Inc.,
                                               its General Partner

                                               By:    /s/   Willem F.P. de Vogel
                                                     ---------------------------
                                                     Name:  Willem F.P. de Vogel
                                                     Title: President



                                   THREE CITIES RESEARCH, INC.

                                         By:    /s/   Willem F.P. de Vogel 
                                               ---------------------------------
                                               Name:  Willem F.P. de Vogel
                                               Title: President




<PAGE>   3
KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints David W. Bernstein, his true and lawful
attorney-in-fact and agent, with full power of substitution and re-substitution,
to sign in any and all capacities any and all amendments to this Statement on
Schedule 13D and to file the same with all exhibits thereto and other documents
in connection therewith with the Securities and Exchange Commission, granting to
such attorneys-in-fact and agents, and each of them, full power and authority to
do all such other acts and execute all such other documents as they, or any of
them, may deem necessary or desirable in connection with the foregoing, as fully
as the undersigned might or could do in person, hereby ratifying and confirming
all that such attorneys-in-fact and agents, or any of them, may lawfully do or
cause to be done by virtue hereof.

                                   THREE CITIES OFFSHORE II C.V.

                                   By:   TCR Offshore Associates, L.P.
                                         its General Partner

                                         By:   Three Cities Associates, N.V.,
                                               its General Partner

                                               By:    /s/   J. William Uhrig
                                                     ---------------------------
                                                     Name:  J. William Uhrig
                                                     Title: President       



                                   THREE CITIES FUND II, L.P.

                                   By:   TCR Associates, L.P.,
                                         its General Partner

                                         By:   Three Cities Research, Inc.,
                                               its General Partner

                                               By:    /s/   Willem F.P. de Vogel
                                                     ---------------------------
                                                     Name:  Willem F.P. de Vogel
                                                     Title: President



                                   THREE CITIES RESEARCH, INC.

                                         By:    /s/   Willem F.P. de Vogel 
                                               ---------------------------------
                                               Name:  Willem F.P. de Vogel
                                               Title: President



                                   Dated:  January 3, 1999





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