Form: SC 13G

Schedule filed to report acquisition of beneficial ownership of 5% or more of a class of equity securities by passive investors and certain institutions

February 8, 2001

JOINT FILING AGREEMENT

Published on February 8, 2001



CUSIP No. 053484101 13-G Page 7 of 8 Pages


EXHIBIT 1 TO SCHEDULE 13G
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FEBRUARY 08, 2001
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MORGAN STANLEY DEAN WITTER & CO. and MORGAN STANLEY DEAN WITTER

INVESTMENT MANAGEMENT INC. hereby agree that, unless

differentiated, this Schedule 13G is filed on behalf of each of

the parties.


MORGAN STANLEY DEAN WITTER & CO.

BY: /s/ Dennine Bullard
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Dennine Bullard / Morgan Stanley & Co. Incorporated

MORGAN STANLEY DEAN WITTER INVESTMENT MANAGEMENT INC.

BY: /s/ Donald P. Ryan
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Donald P. Ryan / Principal Morgan Stanley Dean Witter Investment
Management Inc.



* Attention. Intentional misstatements or omissions of fact constitute federal
criminal violations (see 18 U.S.C. 1001).