Cooperative Information Agents VII 7th International Workshop, CIA 2003, Helsinki, Finland, August 27-29, 2003, Proceedings - Klusch, Matthias; Klusch, Matthias; Ossowski, Sascha; Ossowski, Sascha; Omicini, Andrea; Omicini, Andrea; Laamanen, Heimo; Laamanen, Heimo (Springer Berlin Heidelberg : Imprint: Springer, 2003)