1. Introduction to Logic Programming;Apt,1990
2. Contributions to the Theory of Logic Programming;Apt;Journal of the ACM,1982
3. Verifying Correctness of Logic Programs;Bossi,1989
4. A Method for Specializing Logic Programs;Bossi;ACM Trans. Programming Languages and Systems,1990
5. Proving Termination of Logic Programs by Exploiting Term Properties;Bossi,1991