Cristiano Castelfranchi Eric Werner Artificial Social Systems, 4th European Workshop on Modelling Autonomous Agents in a Multi-Agent World, MAAMAW '92, S. Martino al Cimino, Italy, July 29-31, 1992, Selected Papers MAAMAW Lecture Notes in Computer Science 830 Springer 1994 3-540-58266-5 db/conf/maamaw/maamaw1992.html