%0 Journal Article
%A S. Karimov
%T Periodic solutions of nonlinear systems of difference equations in two variables
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1968
%P 33-39
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1968_4_a5/
%G ru
%F IVM_1968_4_a5