%0 Journal Article %A M. A. Yagubov %T An extension of a control problem and a theorem on the existence %J Doklady Akademii Nauk %D 1986 %P 1316-1319 %V 286 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1986_286_6_a8/ %G ru %F DAN_1986_286_6_a8