1. Finding patterns common to a set of strings;Angluin;Journal of Computer and System Sciences,1980
2. Queries and concept learning;Angluin;Machine Learning,1988
3. Toward a mathematical theory of inductive inference;Blum;Information and Control,1975
4. Language learning with some negative information;Baliga;Journal of Computer and System Sciences,1995
5. G. Baliga, J. Case, W. Merkle, F. Stephan, R. Wiehagen, When unlearning helps, Technical Report TRA5/06, School of Computing, National University of Singapore, 2005.