%0 Journal Article %A R. Gabasov %A V. A. Srochko %T The study of singular controls by means of a variation packet %J Differencialʹnye uravneniâ %D 1970 %P 260-275 %V 6 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1970_6_2_a4/ %G ru %F DE_1970_6_2_a4