11th Portuguese Conference on Artificial Intelligence – EPIA 2003

published in:
F. Moura Pires and S. Abreu (eds.) {\it Progress in Artificial Intelligence 11th Portuguese Conference on Artificial
Intelligence, EPIA 2003, Beja, Portugal, December 2003, Proceedings}. Lecture Notes in Artificial Intelligence LNAI 2902. Berlin:
Springer-Verlag.