Janiš, Vladimír, 1963-

Nearness derivatives and fuzzy differentiability / Vladimír Janiš

In Fuzzy Sets and Systems. -- Amsterdam : Elsevier B.V., 1999. -- ISSN 0165-0114. -- ISSN 1872-6801. -- Vol. 108, no. 1 (1999), pp. 99-102