%0 Journal Article %A V. P. Glushko %T Degenerate linear differential equations. III %J Differencialʹnye uravneniâ %D 1969 %P 443-455 %V 5 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1969_5_3_a3/ %G ru %F DE_1969_5_3_a3