%0 Journal Article %A V. V. Smagin %A P. E. Sobolevskii %T Comparison theorems for the norms of the solutions of linear homogeneous differential equations in Hilbert spaces %J Differencialʹnye uravneniâ %D 1970 %P 2005-2010 %V 6 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1970_6_11_a8/ %G ru %F DE_1970_6_11_a8