%0 Journal Article %A V. A. Tupchiev %T On the existence, uniqueness and asymptotic behaviour of the solution of a boundary-value problem %J Doklady Akademii Nauk %D 1962 %P 1261-1264 %V 142 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1962_142_6_a11/ %G ru %F DAN_1962_142_6_a11