1. Baral, C. and Subrahmanian, V. (1991). Dualities between alternative semantics for logic programming and nonmonotonic reasoning (extended abstract). In A. Nerode, W. Marek, and V.S. Subrahmanian, editors, Logic programming and non-monotonic reasoning (Washington, DC, 1991), pages 69–86, Cambridge, MA. MIT Press.
2. Bochman, A. (1996). Biconsequence Relations for Nonmonotonic Reasoning. In L. Carlucci Aiello, J. Doyle, and S. Shapiro, editors, Principles of Knowledge Representation and Reasoning, Proceedings of the Fifth International Conference (KR96), pages 482–492, Morgan Kaufmann Publishers.
3. Bochman, A. (1998a). A Logical Foundation for Logic Programming I: Biconsequence Relations. Journal of Logic Programming 35:151–170.
4. Bochman, A. (1998b). A Logical Foundation for Logic Programming II: Semantics of General Logic Programs. Journal of Logic Programming 35:171–194.
5. Bidoit, N. and Froidevaux, C. (1991). Negation by default and unstratifiable logic programs. Theoretical Computer Science, 78(1, (Part B)):85–112.