%0 Journal Article %A A. G. Baskakov %T Linear differential operators with unbounded operator coefficients and semigroups of bounded operators %J Matematičeskie zametki %D 1996 %P 811-820 %V 59 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1996_59_6_a1/ %G ru %F MZM_1996_59_6_a1