%0 Journal Article
%A Christian Leis
%T Hopf-bifurcation in systems with spherical symmetry. I: Invariant tori
%J Documenta mathematica
%D 1997
%P 61-113
%V 2
%U http://geodesic.mathdoc.fr/articles/10.4171/dm/24/
%R 10.4171/dm/24
%F 10_4171_dm_24