1. A strong logic programming view for static embedded implications;Arruabarrena,1999
2. Translating a modal language with embedded implication into Horn clause logic;Baldoni,1996
3. Modularity in logic programming;Bugliesi;Journal of Logic Programming,1994
4. N-prolog: An extension of prolog with hypothetical implications. II. Logical foundations and negation as failure;Gabbay;Journal of Logic Programming,1985
5. Goals in the propositional Horn⊃ language are Monotone Boolean circuits;Gaintzarain,2005