%0 Journal Article %A A. Ya. Lepin %T Sufficient conditions for the solvability of a certain boundary value problem %J Differencialʹnye uravneniâ %D 1977 %P 2082-2083 %V 13 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1977_13_11_a20/ %G ru %F DE_1977_13_11_a20