%0 Journal Article
%A V. G. Zvyagin
%A S. V. Kornev
%T Method of guiding functions for existence problems for periodic solutions of differential equations
%J Contemporary Mathematics. Fundamental Directions
%D 2015
%P 59-81
%V 58
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMFD_2015_58_a3/
%G ru
%F CMFD_2015_58_a3