@article{ASCFM_1982__73_21_87_0,
     author = {Vidal, Robert},
     title = {Automorphismes et d\'erivations de {\guillemotleft} petites normes {\guillemotright} sur un corps valu\'e non archim\'edien},
     journal = {Annales scientifiques de l'Universit\'e de Clermont. Math\'ematiques},
     pages = {87--95},
     publisher = {UER de Sciences exactes et naturelles de l'Universit\'e de Clermont},
     volume = {73},
     number = {21},
     year = {1982},
     mrnumber = {706125},
     zbl = {0536.46050},
     language = {fr},
     url = {http://www.numdam.org/item/ASCFM_1982__73_21_87_0/}
}