@article{10_4007_annals_2003_157_557,
     author = {Ricardo P\'erez-Marco},
     title = {Convergence or generic divergence of the {Birkhoff} normal form},
     journal = {Annals of mathematics},
     pages = {557--574},
     publisher = {mathdoc},
     volume = {157},
     number = {2},
     year = {2003},
     doi = {10.4007/annals.2003.157.557},
     mrnumber = {1973055},
     zbl = {1038.37048},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2003.157.557/}
}