%0 Journal Article
%A V. D. Kopchenov
%T A variational problem with a small parameter. I
%J Differencialʹnye uravneniâ
%D 1966
%P 799-815
%V 2
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1966_2_6_a8/
%G ru
%F DE_1966_2_6_a8