from SC 13G
1 page
<page> 1 Page 10 of 11 Pages Exhibit 1 Agreement Pursuant to Rule 13d-1 (F) (1) Under the Securities and Exchange Act of 1934, the Undersigned Hereby Agree That Only One Statement Containing the Information Required by Schedule 13g Need Be Filed With Respects to the Ownership by Each of the Undersigned of Shares of Corporation. This Agreement May Be Executed in Any Number of Counterparts, Each of Which Shall Be Deemed an Original. Executed This 10th Day of February, 1996 Dated: February 10, 1996 Charles River Partnership VI By: Charles River VI GP Limited Partnership By: Signed Richard M. Burnes, Jr. Authorized General Partner Charles River VI GP Limited Partnership By: Signed Richard M. Burnes, Jr. Authorized General Partner Signed Richard M. Burnes, Jr. Signed Donald W. Feddersen Signed John T. Neises Signed Michael J. Zak
