%0 Journal Article %A Nagy, Jozef %T Lyapunov's direct method in abstract local semi-flows %J Commentationes Mathematicae Universitatis Carolinae %D 1967 %P 257-266 %V 8 %N 2 %U http://geodesic.mathdoc.fr/item/CMUC_1967_8_2_a6/ %G en %F CMUC_1967_8_2_a6