Exhibit 99.1
Pursuant to Rule 13d-1(k)(1)(iii) of Regulation 13D-G of the General
Rules and Regulations of the Securities and Exchange Commission under the
Securities Exchange Act of 1934, as amended, the undersigned agrees that the
statement to which this Exhibit is attached is filed on behalf of each of
them in the capacities set forth below.
KEYSTONE, INC.
By: /s/ W. R. Cotham
W. R. Cotham,
Vice President
/s/ W. R. Cotham
W. R. COTHAM
Attorney-in-Fact for:
ROBERT M. BASS (1)
FW AER PARTNERS, L.P.
By: Group 31, Inc.,
General Partner
By: /s/ J. Taylor Crandall
J. Taylor Crandall,
President
GROUP 31, INC.
By: /s/ J. Taylor Crandall
J. Taylor Crandall,
President
/s/ J. Taylor Crandall
J. TAYLOR CRANDALL
FW AER II, L.P.
By: Group III 31, L.L.C.,
General Partner
By: /s/ J. Taylor Crandall
J. Taylor Crandall,
President
GROUP III 31, L.L.C.
By: /s/ J. Taylor Crandall
J. Taylor Crandall,
President
/s/ David G. Brown
DAVID G. BROWN
/s/ Maureen Brown
MAUREEN BROWN
(1) A Power of Attorney authorizing W. R. Cotham, et al., to act on
behalf of Robert M. Bass previously has been filed with the
Securities and Exchange Commission.
