Fuzzy Cluster Analysis: Pseudometrics and Fuzzy Clusters von I. I. Riasna

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On classification of ill-structured problems with present quantitative and qualitative information von I. I. Riasna

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On questions of formalization of combinatorial optimization problems on fuzzy sets von I. I. Riasna

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On formalization of combinatorial optimization problems on fuzzy sets von L. F. Hulianytskyi, I. I. Riasna

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