%0 Journal Article
%A A. D. Ioffe
%T An existence theorem for problems of the calculus of variations
%J Doklady Akademii Nauk
%D 1972
%P 277-280
%V 205
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1972_205_2_a4/
%G ru
%F DAN_1972_205_2_a4