Bifurcation and forced symmetry breaking in Hamiltonian systems

Féthi Grabsi; James Montaldi; Juan-Pablo Ortega

Comptes Rendus. Mathématique, Volume 338 (2004) no. 7 p. 565-570

The symplectic reduced spaces of a Poisson action

Juan-Pablo Ortega

Comptes Rendus. Mathématique, Volume 334 (2002) no. 11 p. 999-1004