%0 Journal Article
%A M. K. Arabov
%A E. M. Mukhamadiev
%A I. D. Nurov
%A Kh. I. Sobirov
%T Existence tests for limiting cycles of second order differential equations
%J Ufa mathematical journal
%D 2017
%P 3-11
%V 9
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/UFA_2017_9_4_a0/
%G en
%F UFA_2017_9_4_a0