LUPSA language for updating logic programs.

José Júlio Alferes Luís Moniz Pereira Halina Przymusinska Teodor C. Przymusinski LUPSA language for updating logic programs. 87-116 2002 138 Artif. Intell. 1-2 db/journals/ai/ai138.html#AlferesPPP02 http://dx.doi.org/10.1016/S0004-3702(02)00183-2