Page 15 of 20 Pages
EXHIBIT A
JOINT FILING AGREEMENT
The undersigned hereby agree that the statement on Schedule
13G with respect to the Common Stock of Centene Corporation, dated as of
February 14, 2002, is, and any amendments thereto (including amendments on
Schedule 13D) signed by each of the undersigned shall be, filed on behalf of
each of us pursuant to and in accordance with the provisions of Rule 13d-1(k)
under the Securities Exchange Act of 1934.
Date: February 14, 2002 STRATEGIC INVESTMENT PARTNERS LTD.
By: /s/ Xxxxxxx X. Xxxxxxx, Xx.
--------------------------------
Xxxxxxx X. Xxxxxxx, Xx.
Attorney-in-Fact
Date: February 14, 2002 QUASAR INTERNATIONAL PARTNERS C.V.
By: /s/ Xxxxxxx X. Xxxxxxx, Xx.
--------------------------------
Xxxxxxx X. Xxxxxxx, Xx.
Attorney-in-Fact
Date: February 14, 2002 QUANTUM INDUSTRIAL PARTNERS LDC
By: /s/ Xxxxxxx X. Xxxxxxx, Xx.
--------------------------------
Xxxxxxx X. Xxxxxxx, Xx.
Attorney-in-Fact
Date: February 14, 2002 QIH MANAGEMENT INVESTOR, L.P.
By: QIH Management, Inc.,
its General Partner
By: /s/ Xxxxxxx X. Xxxxxxx, Xx.
--------------------------------
Xxxxxxx X. Xxxxxxx, Xx.
Vice President
Page 16 of 20 Pages
Date: February 14, 2002 QIH MANAGEMENT, INC.
By: /s/ Xxxxxxx X. Xxxxxxx, Xx.
--------------------------------
Xxxxxxx X. Xxxxxxx, Xx.
Vice President
Date: February 14, 2002 XXXXX FUND MANAGEMENT LLC
By: /s/ Xxxxxxx X. Xxxxxxx, Xx.
--------------------------------
Xxxxxxx X. Xxxxxxx, Xx.
Assistant General Counsel
Date: February 14, 2002 XXXXXX XXXXX
By: /s/ Xxxxxxx X. Xxxxxxx, Xx.
--------------------------------
Xxxxxxx X. Xxxxxxx, Xx.
Attorney-in-Fact