%0 Journal Article
%A A. G. Iosifyan
%A N. P. Konopleva
%T Isoperimetric variational problems in field theory
%J Doklady Akademii Nauk
%D 1971
%P 1036-1039
%V 198
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1971_198_5_a11/
%G ru
%F DAN_1971_198_5_a11