%0 Journal Article %A G. A. Bessmertnykh %T The existence and uniqueness of the solutions of a multi-point de la Vall\'ee Poussin problem for nonlinear differential equations %J Differencialʹnye uravneniâ %D 1970 %P 298-310 %V 6 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1970_6_2_a8/ %G ru %F DE_1970_6_2_a8