1. Hastie, T.; Tinshirani, R.; Friedman, J.: The Elements of Statistical Learning — Springer Series in Statistics. New York: Springer, 2001
2. Mitchell, T. M.: Machine learning. New York: McGraw-Hill, 1997
3. Breiman, L.; Friedman, J.; Olshen R. A.; Stone, C. J.: Classification and Regression Trees. Wadsworth, 1984
4. Breiman, L.: Random Forests. Machine Learning. In: Kluwer Academic Publishers (2001), No. 45, pp. 5–32
5. Zadeh, L. A.: Fuzzy Sets. In: Information Control (1965), No. 8, pp. 338–353