%0 Journal Article %A Mareš, Milan %T How to handle fuzzy-quantities? %J Kybernetika %D 1977 %P 23-40 %V 13 %N 1 %U http://geodesic.mathdoc.fr/item/KYB_1977_13_1_a2/ %G en %F KYB_1977_13_1_a2