%0 Journal Article %A M. M. Khapaev %T Singular differential equations in control and minimization problems %J Informatics and Automation %D 1995 %P 411-418 %V 211 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1995_211_a28/ %G ru %F TRSPY_1995_211_a28