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EXHIBIT 99(b)
Pursuant to Rule 13d-1(k)(1)(iii) of Regulation D of the Rules and
Regulations of the Securities and Exchange Commission under the Securities
Exchange Act of 1934, as amended, the undersigned agree that the attached
Schedule 13D Amendment No. 6 is, and any future amendments thereto may be,
filed on behalf of each of us.
Dated: January 8, 2001
CITICORP INTERNATIONAL FINANCE CORP.
By: /s/ William H. Wolf
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Name: William H. Wolf
Title: Vice President and Secretary
CITIBANK (LUXEMBOURG) S.A.
By: /s/ Kunal Parkash
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Name: Kunal Parkash
Title: Financial Controller
CITICORP BANKING CORPORATION
By: /s/ William H. Wolf
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Name: William H. Wolf
Title: Senior Vice President
CITICORP
By: /s/ Joseph B. Wollard
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Name: Joseph B. Wollard
Title: Assistant Secretary
CITIGROUP HOLDINGS COMPANY
By: /s/ Joseph B. Wollard
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Name: Joseph B. Wollard
Title: Assistant Secretary
CITIGROUP INC.
By: /s/ Joseph B. Wollard
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Name: Joseph B. Wollard
Title: Assistant Secretary
