%0 Journal Article
%A È. Muhamadiev
%T On the theory of periodic solutions of nonlinear systems of elliptic equations
%J Doklady Akademii Nauk
%D 1973
%P 1035-1037
%V 208
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1973_208_5_a8/
%G ru
%F DAN_1973_208_5_a8