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肖盛燮;吕恩琳. MATHEMATICAL EXPECTATION ABOUT DISCRETE RANDOM VARIABLE WITH INTERVAL PROBABILITY OR FUZZY PROBABILITY[J]. Applied Mathematics and Mechanics (English Edition), 2005, 26(10): 1382-1390 .
XIAO Sheng-xie;LÜEn-lin. MATHEMATICAL EXPECTATION ABOUT DISCRETE RANDOM VARIABLE WITH INTERVAL PROBABILITY OR FUZZY PROBABILITY[J]. Applied Mathematics and Mechanics (English Edition), 2005, 26(10): 1382-1390 .