%0 Journal Article %A L. A. Zhivotovskii %T The existence and uniqueness of the solutions of differential equations with a retardation which depends on the solution and its derivative %J Differencialʹnye uravneniâ %D 1969 %P 880-889 %V 5 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1969_5_5_a9/ %G ru %F DE_1969_5_5_a9