%0 Journal Article
%A A. V. Dmitruk
%A A. A. Milyutin
%A N. P. Osmolovskii
%T Lyusternik's theorem and the theory of extrema
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1980
%P 11-51
%V 35
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1980_35_6_a1/
%G en
%F RM_1980_35_6_a1