%0 Journal Article
%A W. Ostasiewicz
%T Recenzja: A. Kaufmann, Introduction to the theory of fuzzy subsets
%J Wiadomości Matematyczne
%D 1980
%P  104-109
%V 23
%N 01
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.14708/wm.v23i01.3779/
%R 10.14708/wm.v23i01.3779
%G pl
%F 10_14708_wm_v23i01_3779