@article{CRMATH_2004__338_4_277_0,
     author = {Ramis, Jean-Pierre and Sauloy, Jacques and Zhang, Changgui},
     title = {La vari\'et\'e des classes analytiques d'\'equations aux \protect\emph{q}-diff\'erences dans une classe formelle},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {277--280},
     publisher = {Elsevier},
     volume = {338},
     number = {4},
     year = {2004},
     doi = {10.1016/j.crma.2003.12.009},
     language = {fr},
     url = {http://archive.numdam.org/articles/10.1016/j.crma.2003.12.009/}
}