JOINT FILING AGREEMENT
Page 14 of 14 Pages
EXHIBIT A
JOINT FILING AGREEMENT
The undersigned hereby agree that the statement on Schedule 13D with
respect to the Common Stock of IGEN International, Inc. dated December 11, 1997
is, and any amendments thereto signed by each of the undersigned shall be, filed
on behalf of us pursuant to and in accordance with the provisions of Rule
13d-1(f) under the Securities Exchange Act of 1934.
Date: December 11, 1997 WHITE ROCK CAPITAL PARTNERS, L.P.
By: White Rock Capital Management, L.P.
Its General Partner
By: White Rock Capital, Inc.
Its General Partner
By: /S/ XXXXXX X. XXXXXX
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Xxxxxx X. Xxxxxx
President
WHITE ROCK CAPITAL MANAGEMENT. L.P.
By: White Rock Capital Inc.
Its General Partner
By: /S/ XXXXXX X. XXXXXX
----------------------------------
Xxxxxx X. Xxxxxx
President
WHITE ROCK CAPITAL, INC.
By: /S/ XXXXXX X. XXXXXX
---------------------------------------
Xxxxxx X. Xxxxxx
President
/S/ XXXXXX X. XXXXXX
--------------------------------------------
Xxxxxx X. Xxxxxx
/S/ XXXXXX X. XXXXXX
--------------------------------------------
Xxxxxx X. Xxxxxx
