Cooperative Information Agents VIII 8th International Workshop, CIA 2004, Erfurt, Germany, September 27-29, 2004, Proceedings - Klusch, Matthias; Klusch, Matthias; Ossowski, Sascha; Ossowski, Sascha; Kashyap, Vipul; Kashyap, Vipul; Unland, Rainer; Unland, Rainer (Springer Berlin Heidelberg : Imprint: Springer, 2004)