The Duy Bui Tuong Vinh Ho Quang-Thuy Ha Intelligent Agents and Multi-Agent Systems, 11th Pacific Rim International Conference on Multi-Agents, PRIMA 2008, Hanoi, Vietnam, December 15-16, 2008. Proceedings 5357 http://dx.doi.org/10.1007/978-3-540-89674-6 2008 978-3-540-89673-9 PRIMA Lecture Notes in Computer Science Springer db/conf/prima/prima2008.html