2Pawlak, Zdzislaw. Rough Sets and Intelligent Data Analysis[J].Information Sciences, 2002,147(1-4): 1 - 12.
3Pawlak, Zdzislaw. Rough Sets, Decision Algorithms and Bayes'Theorem[J]. European Journal of Operational Research, 2002,136(1 ):181-189.
4Pawlak, Zdzislaw. Decisions Rules and Flow Networks[J]. European Journal of Operational Research, 2004, 154(1): 184-190.
5Skowron A, Rauszer C. The Discernbility Matrices and Functions in Information Systems[M].Intelligent Decision Support, Handbook of Applications and Advances of the Rough Sets Theory, The Netherlands: Kluwer, 1992:331-362.
6Skowron A. Boolean Reasoning for Decision Rules Generation[C].7^th International Symposium on Methodologies for Intelligence Systems, 1993:295-305.
7Komorowski J, Polkowski L, Skowron A. Rough Sets: A Tutorial[Z].http://www.folli.uva.nl/CD/1999/library/pdf/skowron.pdf, 1998.
8Orlowska E. Incomplete Intbrmation: Rough Set Analysis[M]. New York: Physica-Verlag Heidelberg, 1998.
9Polkowski L, Tsumoto S, Lin T Y. Rough Set Methods and Applications[M]. New York: Physica-Verlag Heidelberg, 2000.