Page 13 of 13 Pages EXHIBIT A JOINT FILING AGREEMENT The undersigned hereby agree that the statement on Schedule 13G with respect to the Common Stock of Information Analysis Incorporated as of April 3, 1998 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(f) under the Securities Exchange Act of 1934. Date: April 3, 1998 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/ THOMAS U. BARTON --------------------------------------- Thomas U. Barton President Date: April 3, 1998 WHITE ROCK CAPITAL MANAGEMENT. L.P. By: White Rock Capital Inc. Its General Partner By: /S/ THOMAS U. BARTON --------------------------------------- Thomas U. Barton President Date: April 3, 1998 WHITE ROCK CAPITAL, INC. By: /S/ THOMAS U. BARTON -------------------------------------------- Thomas U. Barton President Date: April 3, 1998 /S/ THOMAS U. BARTON ------------------------------------------------- Thomas U. Barton Date: April 3, 1998 /S/ JOSEPH U. BARTON ------------------------------------------------- Joseph U. Barton