%0 Journal Article
%A E. S. Levitin
%T On the perturbation theory of nonsmooth extremal problems with constraints
%J Doklady Akademii Nauk
%D 1975
%P 1260-1263
%V 224
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1975_224_6_a5/
%G ru
%F DAN_1975_224_6_a5