%0 Journal Article %A L. A. Groza %T The asymptotic solutions of certain linear differential equations in a Banach space that contain an unbounded operator %J Differencialʹnye uravneniâ %D 1970 %P 289-297 %V 6 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1970_6_2_a7/ %G ru %F DE_1970_6_2_a7