Ana L. C. Bazzan Sofiane Labidi Advances in Artificial Intelligence - SBIA 2004, 17th Brazilian Symposium on Artificial Intelligence, São Luis, Maranhão, Brazil, September 29 - October 1, 2004, Proceedings 3171 3-540-23237-0 SBIA Lecture Notes in Computer Science Springer 2004 db/conf/sbia/sbia2004.html