%0 Journal Article
%A L. N. Belyustina
%T Small periodic perturbations in a structurally stable autonomous system
%J Doklady Akademii Nauk
%D 1963
%P 251-254
%V 148
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1963_148_2_a1/
%G ru
%F DAN_1963_148_2_a1