%0 Journal Article
%A G. S. Osipenko
%T Perturbation of invariant manifolds. III
%J Differencialʹnye uravneniâ
%D 1987
%P 818-825
%V 23
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1987_23_5_a10/
%G ru
%F DE_1987_23_5_a10