%0 Journal Article %A K. B. Mansimov %T Optimality of singular controls in systems with delay that are controllable by means of initial functions %J Differencialʹnye uravneniâ %D 1989 %P 1081-1084 %V 25 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1989_25_6_a35/ %G ru %F DE_1989_25_6_a35