%0 Journal Article
%A B. T. Polyak
%T A general method for solving extremal problems
%J Doklady Akademii Nauk
%D 1967
%P 33-36
%V 174
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1967_174_1_a8/
%G ru
%F DAN_1967_174_1_a8