@article{RSMUP_2015__133__125_0,
     author = {Rodolphe, Richard},
     title = {Des $\pi $-exponentielles {I} : vecteurs de {Witt} annul\'es par {Frobenius} et algorithme de (leur) rayon de convergence},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {125--158},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {133},
     year = {2015},
     mrnumber = {3354948},
     language = {fr},
     url = {http://www.numdam.org/item/RSMUP_2015__133__125_0/}
}