@article{RCM_1973__7_181609,
     author = {Julian Gevirtz},
     title = {On the univalence of quasi-isometric mappings},
     journal = {Revista colombiana de matematicas},
     pages = {125--132},
     year = {1973},
     volume = {7},
     zbl = {0289.54019},
     url = {http://geodesic.mathdoc.fr/item/RCM_1973__7_181609/}
}