@article{CMH_1935__8_138663,
     author = {A. Speiser},
     title = {Zahlentheorie in rationalen {Algebren.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {391--406},
     publisher = {mathdoc},
     volume = {8},
     year = {1935},
     zbl = {62.0103.02},
     url = {http://geodesic.mathdoc.fr/item/CMH_1935__8_138663/}
}