%0 Journal Article
%A V. V. Velichenko
%T On sufficient conditions for optimality in the maximum principle
%J Doklady Akademii Nauk
%D 1968
%P 747-749
%V 182
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1968_182_4_a1/
%G ru
%F DAN_1968_182_4_a1