@article{RCM_1973__7_181604,
     author = {victor S. Albis Gonz\'alez},
     title = {A remark on primitive roots and ramitfication},
     journal = {Revista colombiana de matematicas},
     pages = {93--98},
     year = {1973},
     volume = {7},
     zbl = {0289.12019},
     url = {http://geodesic.mathdoc.fr/item/RCM_1973__7_181604/}
}