1. Interactions of Hopf and pitchfork bifurcations;Langford,1980
2. Singularities and Groups in Bifurcation Theory. Vol. I;Golubitsky,1985
3. Coupled stationary bifurcations in nonflux boundary value problems;Armbruster;Math. Proc. Camb. Phil. Soc.,1987
4. Singularities and Groups in Bifurcation Theory. Vol. II;Golubitsky,1988
5. Mode interactions with spherical symmetry;Castro;Int. J. Bif. Chaos,1994