@article{PMIHES_1985__61__67_0,
     author = {Chenciner, Alain},
     title = {Bifurcations de points fixes elliptiques - {I.} {Courbes} invariantes},
     journal = {Publications Math\'ematiques de l'IH\'ES},
     pages = {67--127},
     year = {1985},
     publisher = {Institut des Hautes Etudes Scientifiques},
     volume = {61},
     mrnumber = {783349},
     zbl = {0566.58025},
     language = {fr},
     url = {https://www.numdam.org/item/PMIHES_1985__61__67_0/}
}