S. Fleisig Donald W. Loveland A. K. Smiley III D. L. Yarmush An Implementation of the Model Elimination Proof Procedure. 124-139 1974 21 J. ACM 1 http://doi.acm.org/10.1145/321796.321807 db/journals/jacm/jacm21.html#FleisigLSY74