Fuzziness and fuzzy equality
Aleš Pultr (1982)
Commentationes Mathematicae Universitatis Carolinae
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Aleš Pultr (1982)
Commentationes Mathematicae Universitatis Carolinae
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Zdeněk Frolík, Jan K. Pachl (1973)
Commentationes Mathematicae Universitatis Carolinae
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