Stefano A. Cerri Danail Dochev Artificial Intelligence: Methodology, Systems, and Applications, 9th International Conference, AIMSA 2000, Varna, Bulgaria, September 20-23, 2000, Proceedings AIMSA Lecture Notes in Computer Science 1904 Springer 2000 3-540-41044-9 db/conf/aimsa/aimsa2000.html