Citation: Jp. Ortega et Ts. Ratiu, A Dirichlet criterion for the stability of periodic and relative periodic orbits in Hamiltonian systems, J GEOM PHYS, 32(2), 1999, pp. 131-159
Citation: Jp. Ortega et Ts. Ratiu, Non-linear stability of singular relative periodic orbits in Hamiltonian systems with symmetry, J GEOM PHYS, 32(2), 1999, pp. 160-188