1. F. Bacchus and A. Grove. Graphical models for preference and utility. In Uncertainty in Artificial Intelligence (UAI-95), pages 3–10, 1995.
2. N.D. Belnap. A useful four-valued logic. In Modern Uses of Multiple Valued Logic. D. Reidel, Dordrecht, 1977.
3. S. Benferhat, C. Cayrol, D. Dubois, J. Lang, and H. Prade. Inconsistency management and prioritized syntax-based entailment. In Proceedings of the 13th International Joint Conference on Artificial Intelligence (IJCAI’93), pages 640–645, 1993.
4. S. Benferhat, D. Dubois, S. Kaci, and H. Prade. Bipolar possibilistic representations. In Proceedings of UAI-02, 2002.
5. S. Benferhat, D. Dubois, S. Kaci, and H. Prade. Bipolar representation and fusion of preferences in the possibilistic logic framework. In Proceedings of KR2002, 2002.