M. Derntl, and R. Motschnig-Pitrik. Proceedings of the 14th International Conference of the Society for Information Technology & Teacher Education (SITE03), page 2379-2382. Albuquerque, New Mexico, USA, (2003)
C. Goldman, A. Langer, and J. Rosenschein. Proceedings of the First International Conference on Practical Applications of Intelligent Agents and Multi-Agents Technology (PAAM96), (1996)
C. Goldman, Y. Mor, and J. Rosenschein. Proceedings of the First International Conference on Practical Applications of Intelligent Agents and Multi-Agents Technology (PAAM96), page 837--842. London, UK, (1996)