%0 Journal Article %A V. V. Nemytskii %T Some modern problems in the qualitative theory of ordinary differential equations %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1965 %P 1-34 %V 20 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1965_20_4_a0/ %G en %F RM_1965_20_4_a0