%0 Journal Article %A S. V. Churakova %T The relative controllability of linear systems with variable and distributed retardation %J Differencialʹnye uravneniâ %D 1969 %P 1068-1075 %V 5 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1969_5_6_a8/ %G ru %F DE_1969_5_6_a8