1. Combining knowledge bases consisting in first order theories;Baral;Computational Intelligence,1992
2. S. Benferhat, D. Dubois, H. Prade (1992) Representing default rules in possibilistic logic. KR'92, 673–684
3. S. Benferhat, C. Cayrol, D. Dubois, J. Lang, H. Prade (1993) Inconsistency management and prioritized syntax-based entailment. To appear in IJCAI'93.
4. G. Brewka (1989) Preferred subtheories: an extended logical framework for default reasoning. IJCAI'89, 1043–1048
5. L. Cholvy (1992) A logical approach to multi-sources reasoning. In: Applied Logic Conference: Logic at Work, Amesterdam.