CUSIP NO. 717131 106 Schedule 13D/A
Exhibit 99.1
JOINT FILING AGREEMENT
In accordance with Rule 13d-1(f)(1) of Regulation 13d of the General
Rules and Regulations of the Securities and Exchange Commission under the
Securities Act of 1934, as amended, the undersigned agree to the joint filing on
behalf of each of them of this statement and any subsequent amendments thereto.
Date: January 7, 1998
/s/ XXXXXX X. XXXXXXX
Xxxxxx X. Xxxxxxx
/s/ XXXXXXX X. XXXXXXXX
Xxxxxxx X. Xxxxxxxx
/s/ XXXXX X. XXXXXXXXX
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/s/ XXXXX X. XXXXXXX
Xxxxx X. Xxxxxxx
/s/ XXXXX XXX XXXXXXXXX
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Xxxxxxx Xx
ASTER S.A.
By: /s/ XXXX XXXXXXX XXXXXXXX
Xxxx Xxxxxxx Xxxxxxxx
President
GES INVESTMENTS, S.A.
By: /s/ XXXX XXXXXXX XXXXXXXX
Xxxx Xxxxxxx Xxxxxxxx
President