%0 Journal Article
%A S. A. Pak
%T A priori estimate of solutions of boundary value problems for second order ordinary nonlinear differential equations
%J Differencialʹnye uravneniâ
%D 1967
%P 890-897
%V 3
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1967_3_6_a1/
%G ru
%F DE_1967_3_6_a1