%0 Journal Article %A Yu. E. Nesterov %A B. V. Cherkasskii %T Lexicographic rules for the differentiation of nonsmooth %J Doklady Akademii Nauk %D 1987 %P 32-34 %V 296 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1987_296_1_a6/ %G ru %F DAN_1987_296_1_a6