%0 Journal Article %A Jacek Mańko %T Bifuzzy sets and other generalizations of a fuzzy set %J Mathematica Applicanda %D 1994 %P 39-47 %V 23 %N 37 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14708/ma.v23i37.1826/ %R 10.14708/ma.v23i37.1826 %G pl %F 10_14708_ma_v23i37_1826