@article{ASENS_2010_4_43_4_659_0,
     author = {Lombardi, Eric and Stolovitch, Laurent},
     title = {Normal forms of analytic perturbations of quasihomogeneous vector fields: {Rigidity,} invariant analytic sets and exponentially small approximation},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {659--718},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {Ser. 4, 43},
     number = {4},
     year = {2010},
     doi = {10.24033/asens.2131},
     mrnumber = {2722512},
     zbl = {1202.37071},
     language = {en},
     url = {http://archive.numdam.org/articles/10.24033/asens.2131/}
}