1. Constructible falsity and inexact predicates;Almukdad;Journal of Symbolic Logic,1984
2. Entailment: The Logic of Relevance and Necessity, Vol. 1;Anderson,1975
3. Entailment: The Logic of Relevance and Necessity, Vol. 2;Anderson,1992
4. Logic programming and negation: a survey;Apt;Journal of Logic Programming,1994
5. Reasoning with logical bilattices;Arieli;Journal of Logic, Language and Information,1996