%0 Journal Article %A N. V. Torop %T On stationary transformations of nonautonomous differential systems %J Differencialʹnye uravneniâ %D 1986 %P 1076-1077 %V 22 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1986_22_6_a24/ %G ru %F DE_1986_22_6_a24