Intelligent Virtual Agents 4th International Workshop, IVA 2003, Kloster Irsee, Germany, September 15-17, 2003, Proceedings - Rist, Thomas; Rist, Thomas; Aylett, Ruth; Aylett, Ruth; Ballin, Daniel; Ballin, Daniel; Rickel, Jeff; Rickel, Jeff (Springer Berlin Heidelberg : Imprint: Springer, 2003)