Thomas Mandl, Christa Womser-Hacker. Challenges for the Evaluation of Multilingual Information Retrieval Systems. In Vanessa Evers, Elisa del Galdo, Dianne Cyr, Carole Bonanni, editors, Designing for Global Markets 6, IWIPS 2004, Sixth International Workshop on Internationalisation of Products and Systems, Culture, Trust, and Design Innovation, Vancouver, BC, Canada, 8-10 July 2004. pages 49-60, Product & Systems Internationalisation, Inc., 2004.