1. Graphing methods for topological proofs;Ballantyne,1973
2. Computer generation of counterexamples in topology;Ballantyne,1975
3. Automatic proofs of theorems in analysis using nonstandard techniques;Ballantyne;J. ACM,1977
4. Un système pour exprimer et mettre en oeuvre des connaissances en manipulation formelle d'expressions;Baron,1982
5. An experiment in knowledge-based automatic programming;Barstow;Artificial Intelligence,1979