8Salvatore Greco, Benedetto Matarazzo, Roman Slowinski. Rough sets theory for multicriteria decision analysis[J]. European Journal of Operational Research, 2001, 28(1): 1-47.
9Yahia M E, Mahmod R, Sulaiman N, et al. Rough nearul expert systems[J]. Expert Systems with Appticalions, 2000, 18(1): 87-99.
10Ryszard Nowicki, Roman Slowinski, Jerzy Stefanowski. Evlualion of vibroacoustic dignostic symptoms by means of the rough sets theory[J]. Computers in Industry, 1992, 20(2): 141-152.