%0 Journal Article %A A. V. Sarychev %T Optimality of generalized (impulse) controls in a nonlinear time-optimality problem %J Differencialʹnye uravneniâ %D 1991 %P 788-801 %V 27 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1991_27_5_a8/ %G ru %F DE_1991_27_5_a8