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Achache, A. How to fuzzify a closure space. (English) Zbl 0648.06005 J. Math. Anal. Appl. 130, No. 2, 538-544 (1988). Reviewer: J.Drewniak MSC: 06A15 06B23 03E72 PDF BibTeX XML Cite \textit{A. Achache}, J. Math. Anal. Appl. 130, No. 2, 538--544 (1988; Zbl 0648.06005) Full Text: DOI OpenURL