%0 Journal Article %A Kramosil, Ivan %T A selection-based formal description of an environment %J Kybernetika %D 1976 %P -150 %V 12 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_1976__12_3_a1/ %G en %F KYB_1976__12_3_a1