%0 Journal Article %A V. I. Fomin %T On the Solution of the Cauchy Problem for a Second-Order Linear Differential Equation with Constant Unbounded Operator Coefficients in a Banach Space %J Differencialʹnye uravneniâ %D 2005 %P 1130-1133 %V 41 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2005_41_8_a16/ %G ru %F DE_2005_41_8_a16