1. The Logic of Conditionals, an Application of Probability to Deductive Logic;Adams,1975
2. J. Łukasiewicz, Die logischen Grundlagen der Wahrscheinlichkeitsrechnung, Krakow, 1913 (L. Borkowski (Ed.), Jan Łukasiewicz – Selected Works, North-Holland, Amsterdam, London, Polish Scientific Publishers, Warsaw, 1970
3. Rough Sets – Theoretical Aspects of Reasoning about Data;Pawlak,1991
4. Z. Pawlak, Decision rules, Bayes' rule and rough sets, in: N. Zhong, A. Skowron, S. Ohsuga (Eds.), Proceedings of the Seventh International Workshop: New Directions in Rough Sets, Data Mining, and Granular – Soft Computing (RSFDGSC'99), Yamaguchi, Japan, November 1999, Lecture Notes in Artificial Intelligence, vol. 1711, Springer, Berlin, 1999, pp. 1–9
5. Z. Pawlak, Rough Sets and Decision Algorithms, Springer, 2000, to appear