EXHIBIT A AgreementSchedule 13d/A • November 9th, 2005 • Caisse De Depot Et Placement Du Quebec • Laboratory analytical instruments
Contract Type FiledNovember 9th, 2005 Company IndustryThe undersigned hereby agree that this statement on Schedule 13D/A with respect to beneficial ownership of shares of common stock of ART Advanced Research Technologies Inc. is filed jointly, on behalf of each of them.