@article{AFST_1982_5_4_3-4_281_0,
     author = {Labeyrie, Jacques},
     title = {Factorisation de {Ritt} pour les polyn\^omes exponentiels formels},
     journal = {Annales de la Facult\'e des sciences de Toulouse : Math\'ematiques},
     pages = {281--289},
     publisher = {Universit\'e Paul Sabatier},
     address = {Toulouse},
     volume = {5e s{\'e}rie, 4},
     number = {3-4},
     year = {1982},
     mrnumber = {701733},
     zbl = {0509.13020},
     language = {fr},
     url = {http://archive.numdam.org/item/AFST_1982_5_4_3-4_281_0/}
}