1. Generic bifurcations in Hamiltonian systems;Meyer,1975
2. Hopf bifurcation in the presence of symmetry;Golubitsky;Arch. Rational Mech. Anal.,1985
3. Bibliographical notes on generic bifurcations in Hamiltonian systems;Meyer,1986
4. Linear Representations of Finite Groups;Serre,1977
5. Formal stability of liquid drops with surface tension;Lewis,1986