%0 Journal Article %A B. Rashayski %A L. M. Berkovich %T Application of tangent transformations to first-order ordinary differential equations %J Differencialʹnye uravneniâ %D 1985 %P 2177-2181 %V 21 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1985_21_12_a24/ %G ru %F DE_1985_21_12_a24