%0 Journal Article %A Žampa, Pavel %T On some properties of dynamical systems %J Kybernetika %D 1971 %P -37 %V 07 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_1971__7_1_a2/ %G en %F KYB_1971__7_1_a2