%0 Journal Article %A M. V. Topunov %T On the Existence of an Optimal Control in a Nonlinear Minimum Time Problem %J Differencialʹnye uravneniâ %D 2004 %P 177-182 %V 40 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2004_40_2_a3/ %G ru %F DE_2004_40_2_a3