References
- Baoding , L . 2002 . Theory and Practice of Uncertain Programming, , 1st , Heidelberg : Physica-Verlag .
- Pawlak , Z . 1982 . Rough sets . In. J. Comput. Informa. Sci. , 11 : 341 – 356 .
- Pawlak , Z . 1991 . Rough Sets: Theoretical Aspects of Reasoning About Data , Boston : Kluwer .
- Pawlak , Z . 1996 . Rough Sets . Rough Relations and Rough Functions. Fundamenta Inform , 27 : 103 – 108 .
- Pawlak , Z . 1997 . Vagueness: A rough set view, Structures in Logic and Computer Science , 106 – 117 . Springer .
- Pedregal , P . 2004 . Introduction to Optimization , Berlin : Springer .
- Skowron , A , Komorowski , J , Pawlak , Z and Polkowski. , L . 2002 . “ A rough set perspective on data and knowledge ” . In Handbook of KDD , Edited by: Kloesgen , W and Zytkow , J . 134 – 149 . Oxford : Oxford University Press .
- Youness , EA . 2006 . Characterizing solutions of rough programming problems . Eut. J. Oper. Res. , 168 : 1019 – 1029 .