@article{CMH_1980__55_139844,
     author = {H.L. Royden},
     title = {The {Ahlfors-Schwarz} lemma in several complex variables.},
     journal = {Commentarii mathematici Helvetici},
     pages = {547--558},
     publisher = {mathdoc},
     volume = {55},
     year = {1980},
     zbl = {0484.53053},
     url = {http://geodesic.mathdoc.fr/item/CMH_1980__55_139844/}
}