%0 Journal Article %A Hájek, Otomar %T Critical points of abstract dynamical systems %J Commentationes Mathematicae Universitatis Carolinae %D 1964 %P 121-124 %V 05 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1964__5_3_a1/ %G en %F CMUC_1964__5_3_a1