A comprehensive study of upward fuzzy preference relation based fuzzy rough set models: Properties and applications in treatment of coronavirus disease
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2015 ◽
Vol 241
(3)
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pp. 815-829
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2014 ◽
Vol 27
(6)
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pp. 2969-2985
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2012 ◽
Vol 4
(22)
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pp. 182-190