%0 Journal Article %A E. N. Khailov %T Some estimations on extremal controls in the problem of optimal control for bilinear systems %J Trudy Instituta matematiki i mehaniki %D 1995 %P 202-210 %V 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/TIMM_1995_3_a16/ %G ru %F TIMM_1995_3_a16