1. Abe, N. and Warmuth, M. 1990. On the computational complexity of approximating distributions by probabilistic automata. In Proc. 3rd Workshop on Computational Learning Theory.
2. Text Compression;Bell,1990
3. Etzioni, O. 1990. Why PRODIGY/EBL works. In Proceedings, AAAI-90. American Association for Artificial Intelligence. 915–922.
4. Efficient reordering of Prolog programs;Gooley;IEEE Trans. on Knowledge and Data Engineering,1989
5. Gratch, J. and Dejong, G. 1991. A hybrid approach to guaranteed effective control strategies. In Proc. 8th International Workshop on Machine Learning. 509–513.