@article{ASENS_2004_4_37_6_819_0,
     author = {Miranda, Eva and Zung, Nguyen Tien},
     title = {Equivariant normal form for nondegenerate singular orbits of integrable hamiltonian systems},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {819--839},
     publisher = {Elsevier},
     volume = {Ser. 4, 37},
     number = {6},
     year = {2004},
     doi = {10.1016/j.ansens.2004.10.001},
     mrnumber = {2119240},
     zbl = {1068.37041},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1016/j.ansens.2004.10.001/}
}