1. Lecture Notes in Artificial Intelligence;T.Y. Lin,2002
2. Menasalvas, E., Wasilewska, A., Fernández, C.: The lattice structure of the KDD process: Mathematical expression of the model and its operators. International Journal of Information Systems and Fundamenta Informaticae; special issue, 48–62 (2001)
3. Menasalvas, E., Wasilewska, A., Fernández-Baizan, M.C., Martinez, J.F.: Data Mining - A Semantical Model. In: Proceedings of 2002 World Congres on Computational Intelligence, Honolulu, Hawai, USA, May 11- 17, pp. 435–441 (2002)
4. Menasalvas, E., Wasilewska, A.: Data Mining as Generalization Process: A Formal MOdel. In: Foundation of Data Mining, Kluwer, Dordrecht (2005) (to appear)
5. Pawlak, Z.: Rough Sets - theoretical Aspects Reasoning About Data. Kluwer Academic Publishers, Dordrecht (1991)