%0 Journal Article
%A Yu. N. Bibikov
%A V. A. Pliss
%T The existence of invariant tori in the neighborhood of the zero solution of a system of ordinary differential equations
%J Differencialʹnye uravneniâ
%D 1967
%P 1864-1881
%V 3
%N 11
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1967_3_11_a2/
%G ru
%F DE_1967_3_11_a2