%0 Journal Article %A V. P. Panteleev %T Controllability of time-dependent linear systems %J Differencialʹnye uravneniâ %D 1985 %P 623-628 %V 21 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1985_21_4_a8/ %G ru %F DE_1985_21_4_a8