%0 Journal Article %A P. S. Belevets %A I. G. Kozhukh %T A qualitative study in the large of a certain class of dynamical systems %J Differencialʹnye uravneniâ %D 1974 %P 195-201 %V 10 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1974_10_2_a1/ %G ru %F DE_1974_10_2_a1