%0 Journal Article %A S. P. Tokarev %T Analytic equivalence of certain nonautonomous systems of differential equations %J Differencialʹnye uravneniâ %D 1982 %P 1702-1707 %V 18 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1982_18_10_a6/ %G ru %F DE_1982_18_10_a6