%0 Journal Article %A A. Ya. Lepin %A A. D. Myshkis %T The existence of a solution of a certain nonlinear boundary value problem for an $n$th-order ordinary differential equation %J Differencialʹnye uravneniâ %D 1968 %P 1171-1183 %V 4 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1968_4_7_a0/ %G ru %F DE_1968_4_7_a0