%0 Journal Article %A V. D. Kopchenov %T A variational problem with a small parameter. II %J Differencialʹnye uravneniâ %D 1966 %P 967-987 %V 2 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1966_2_7_a11/ %G ru %F DE_1966_2_7_a11