1. Towards a theory of declarative knowledge;Apt,1988
2. Generalized Disjunctive Well-Founded Semantics for Logic Programs;Baral,1989
3. Proceedings of 5th International Symposium on Methodologies for Intelligent Systems (ISMIS'90);Baral,1990
4. W F3: A semantics for negation in disjunctive logic programs;Baral,1991
5. Dualities between alternative semantics for logic programming and non-monotonic reasoning;Baral,1991