%0 Journal Article %A R. Gabasov %A F. M. Kirillova %T On the theory of necessary conditions for higher order optimality %J Differencialʹnye uravneniâ %D 1970 %P 665-676 %V 6 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1970_6_4_a8/ %G ru %F DE_1970_6_4_a8