%0 Journal Article
%A M. T. Teryokhin
%T The limit cycles of a~second-order system of differential equations: the method of small forms
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 2009
%P 73-82
%N 8
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_2009_8_a9/
%G ru
%F IVM_2009_8_a9