%0 Journal Article %A G. A. Kurina %T Invertibility of an Operator Appearing in the Control Theory for Linear Systems %J Matematičeskie zametki %D 2001 %P 230-236 %V 70 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2001_70_2_a6/ %G ru %F MZM_2001_70_2_a6