Toshiko Wakaki, Katsumi Inoue, Chiaki Sakama, Katsumi Nitta. The PLP System. In José Júlio Alferes, João Alexandre Leite, editors, Logics in Artificial Intelligence, 9th European Conference, JELIA 2004, Lisbon, Portugal, September 27-30, 2004, Proceedings. Volume 3229 of Lecture Notes in Computer Science, pages 706-709, Springer, 2004. [doi]
Abstract is missing.