%0 Journal Article %A L. D. Vishnevskii %T Construction in finite form of the solutions of certain classes of nonautonomous systems of ordinary differential equations %J Differencialʹnye uravneniâ %D 1970 %P 1000-1006 %V 6 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1970_6_6_a5/ %G ru %F DE_1970_6_6_a5