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FUZZY SETS AND SYSTEMS, vol. 130, no. 2, page. 175 - 188, 2002-09-01
IEEE TRANSACTIONS ON AUTOMATIC CONTROL, vol. 47, no. 2, page. 318 - 323, 2002-02
JOURNAL OF INTELLIGENT SYSTEMS, vol. 12, no. 2, page. 69 - 91, 2002-01
ISIJ INTERNATIONAL, vol. 42, no. 11, page. 1266 - 1272, 2002-01