in EPIA 91, 5th Portuguese Conference on Artificial Intelligence, Albufeira, Portugal, October 1-3, 1991, Proceedings in Lecture Notes in Computer Science, ISSN: 0302-9743
Volume: 541, Páginas: 135-150
Conference
5Th Portuguese Conference on Artificial Intelligence, Epia 1991, Date: 1 October 1991 through 3 October 1991