1. López, D., Sempere, J.M., García, P.: Inference of reversible tree languages. IEEE Transactions on Systems, Man, and Cybernetics, Part B 34(4), 1658–1665 (2004)
2. Lecture Notes in Computer Science;F. Drewes,2003
3. Besombes, J., Marion, J.Y.: Learning tree languages from positive examples and membership queries. Theoretical Computer Science 382, 183–197 (2007)
4. Oncina, J., Garcia, P.: Inference of recognizable tree sets. Technical report, DSIC II/47/93, Universidad de Valencia (1993)
5. Shirakawa, H., Yokomori, T.: Polynomial-time MAT learning of c-deterministic context-free grammars. Transaction of Information Processing Society of Japan 34, 380–390 (1993)