1. Abe, N., Takeuchi, J., & Warmuth, M. K., (1991). Polynomial learnability of probabilistic concepts with respect to the Kullback-Leibler divergence. InProceedings of the 1991 Workshop on Computational Learning Theory. San Mateo, CA: Morgan Kaufmann.
2. Angluin, D., (1978). On the complexity of minimal inference of regular sets.Information and Control, 39 337?350.
3. Angluin, D., (1988).Identifying languages from stochastic examples (Technical Report YALEU/DCS/RR-614). Yale University.
4. Angluin, D., (1989).Minimum consistent 2-state DFA problem is NP-complete. Unpublished manuscript.
5. Barron, A.R. & Cover, T.M., (1989). Minimum complexity density estimation.IEEE Transactions on Information Theory.