%0 Journal Article %A R. Gabasov %A L. E. Zabello %A F. M. Kirillova %T Controllability of linear non-stationary systems %J Doklady Akademii Nauk %D 1975 %P 1035-1037 %V 225 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1975_225_5_a12/ %G ru %F DAN_1975_225_5_a12