%0 Journal Article %A E. H. Al'brekht %T The optimal control of the motion of quasilinear systems %J Differencialʹnye uravneniâ %D 1969 %P 430-442 %V 5 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1969_5_3_a2/ %G ru %F DE_1969_5_3_a2