%0 Journal Article
%A A. Chenciner
%T A note by Poincar{\'e}
%J Russian journal of nonlinear dynamics
%D 2005
%P 143-154
%V 1
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ND_2005_1_1_a7/
%G ru
%F ND_2005_1_1_a7