@article{CMH_1945__18_138879,
     author = {Rud. Fueter},
     title = {\"Uber primitive {Wurzeln} von {Primzahlen.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {217--223},
     publisher = {mathdoc},
     volume = {18},
     year = {1945},
     zbl = {0060.08606},
     url = {http://geodesic.mathdoc.fr/item/CMH_1945__18_138879/}
}