1. D. Angluin. “Learning Regular Sets from Queries and Counterexamples”. Information and Computation, 75, 87–106, 1987.
2. D. Angluin. “Queries and Concept Learning”. Machine Learning, 2(4), 319–342, 1988.
3. D. Angluin. “Negative Results for Equivalence Queries”. Machine Learning, 5, 121–150, 1990.
4. D. Angluin, M. Frazier and L. Pitt. “Learning Conjunctions of Horn Clauses”. Machine Learning, 9, 147–164, 1992.
5. R. Elmasri and S. B. Navathe. Fundamentals of Database Systems. Benjamin-Cummings Pub. Redwood City, California, 1994.