@article{IM_1978__48_142590,
     author = {P. Robba},
     title = {Lemmes de {Schwarz} et lemmes d'approximations p-adiques en plusieurs variables.},
     journal = {Inventiones mathematicae},
     pages = {245--278},
     publisher = {mathdoc},
     volume = {48},
     year = {1978},
     zbl = {0392.12020},
     url = {http://geodesic.mathdoc.fr/item/IM_1978__48_142590/}
}