%0 Journal Article %A V. P. Rudakov %T Correctness of a boundary problem for differential-operator equations in a Banach space %J Differencialʹnye uravneniâ %D 1978 %P 554-555 %V 14 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1978_14_3_a22/ %G ru %F DE_1978_14_3_a22