%0 Journal Article
%A Leis, Christian
%T Hopf-bifurcation in systems with spherical symmetry. I: Invariant tori
%J Documenta mathematica
%D 1997
%P 61-113
%V 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DOCMA_1997__2__a11/
%G en
%F DOCMA_1997__2__a11