%0 Journal Article %A A. I. Sotskov %T Necessary conditions of the minimum for a certain type of non-smooth problems %J Doklady Akademii Nauk %D 1969 %P 261-264 %V 189 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1969_189_2_a9/ %G ru %F DAN_1969_189_2_a9