1. A. Skowron, C. Rauszer, The discernibility matrices and functions in information systems, ICS Report 1/91, Warsaw University of Technology.
2. LERS – a system for learning from examples based on rough sets;Grzymala-Busse,1991
3. A method for computing all maximally general rules in attribute-value systems;Ziarko;Computational Intelligence,1996
4. Rough Sets – Theoretical Aspects of Reasoning About Data;Pawlak,1991
5. The investigation of the Bayesian rough set model;Slezak;International Journal of Approximate Reasoning,2005