@article{CRMATH_2004__338_7_565_0,
     author = {F\'ethi Grabsi and James Montaldi and Juan-Pablo Ortega},
     title = {Bifurcation and forced symmetry breaking in {Hamiltonian} systems},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {565--570},
     publisher = {Elsevier},
     volume = {338},
     number = {7},
     year = {2004},
     doi = {10.1016/j.crma.2004.01.029},
     language = {en},
}