%0 Journal Article
%A G. Marino
%A R. Toscano
%T Periodic Solutions of a Class of Nonlinear Systems of Ordinary Differential Equations
%J Differencialʹnye uravneniâ
%D 2004
%P 465-476
%V 40
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_2004_40_4_a3/
%G ru
%F DE_2004_40_4_a3