%0 Journal Article %A V. I. Plotnikov %A I. M. Starobinets %T Phase inclusions in optimal control problems %J Differencialʹnye uravneniâ %D 1986 %P 236-247 %V 22 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1986_22_2_a8/ %G ru %F DE_1986_22_2_a8