1. Contributions to the Theory of Logic Programming;Apt;J. ACM,1982
2. Dataflow, Flowcharts, and “LUCID”-style Programming in Logic;Brough;Proc. IEEE Symposium on Logic Programming,1984
3. General Topology;Bourbaki,1966
4. Negation as Failure;Clark,1978
5. Predicate Logic as a Computational Formalism;Clark,1979