%0 Journal Article %A Michálek, Jiří %T Normal covariances %J Kybernetika %D 1988 %P 17-27 %V 24 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_1988__24_1_a1/ %G en %F KYB_1988__24_1_a1