1. The semantics of predicate logic as a programming language;van Emden;J. ACM,1976
2. Computers and Intractability—A Guide to NP-Completeness;Garey,1979
3. Cliques, Coloring, and Satisfiability. Second DIMACS Implementation Challenge,1996
4. Planning as satisfiability;Kautz,1992
5. Pushing the envelope: planning, propositional logic, and stochastic search;Kautz,1996