%0 Journal Article
%A M. N. Yakovlev
%T Nonnegative solutions of systems of nonlinear (in particular, difference) equations
%J Informatics and Automation
%D 1968
%P 111-116
%V 96
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TRSPY_1968_96_a10/
%G ru
%F TRSPY_1968_96_a10