%0 Journal Article %A G. K. Zakharov %A V. I. Plotnikov %T Necessary time-optimality conditions in the case of two control parameters with different functional natures %J Matematičeskie zametki %D 1970 %P 273-280 %V 7 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1970_7_3_a1/ %G ru %F MZM_1970_7_3_a1