Zimmermann, H. (1985). Fuzzy set theory and its applications. Kluwer-Nijhoff Pub. ; Distributors for North America, Kluwer Academic Publishers.
Παραπομπή Chicago StyleZimmermann, H.-J. Fuzzy Set Theory and Its Applications. Boston : Hingham, MA, U.S.A.: Kluwer-Nijhoff Pub. ; Distributors for North America, Kluwer Academic Publishers, 1985.
Παραπομπή MLAZimmermann, H.-J. Fuzzy Set Theory and Its Applications. Kluwer-Nijhoff Pub. ; Distributors for North America, Kluwer Academic Publishers, 1985.
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