%0 Journal Article
%A V. S. Afraimovich
%A L. P. Shilnikov
%T On small periodic perturbations of autonomous systems
%J Doklady Akademii Nauk
%D 1974
%P 739-742
%V 214
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1974_214_4_a1/
%G ru
%F DAN_1974_214_4_a1