%0 Journal Article %A V. I. Fomin %T On a Weakly Degenerate First-Order Linear Differential Equation in a Banach Space %J Differencialʹnye uravneniâ %D 2005 %P 1433-1435 %V 41 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2005_41_10_a21/ %G ru %F DE_2005_41_10_a21