@article{JTNB_2009__21_2_263_0,
     author = {Jean, Sandrine},
     title = {Conjugacy classes of series in positive characteristic and {Witt} vectors.},
     journal = {Journal de th\'eorie des nombres de Bordeaux},
     pages = {263--284},
     publisher = {Universit\'e Bordeaux 1},
     volume = {21},
     number = {2},
     year = {2009},
     doi = {10.5802/jtnb.670},
     mrnumber = {2541425},
     language = {en},
     url = {http://www.numdam.org/articles/10.5802/jtnb.670/}
}