@article{JRAM_1932__167_149796,
     author = {N. Tschebotar\"ow},
     title = {Untersuchungen \"uber relativ {Abelsche} {Zahlk\"orper.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {98--121},
     publisher = {mathdoc},
     volume = {167},
     year = {1932},
     zbl = {0003.20001},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1932__167_149796/}
}