%0 Journal Article %A Hájek, Otomar %T Differentiable representation of flows (Preliminary communication) %J Commentationes Mathematicae Universitatis Carolinae %D 1966 %P 219-225 %V 7 %N 2 %U http://geodesic.mathdoc.fr/item/CMUC_1966_7_2_a5/ %G en %F CMUC_1966_7_2_a5