@article{MAN_1958__135_160633,
     author = {G.J. Rieger},
     title = {\"Uber die {Anzahl} der {Ideale} in einer {Idealklasse} mod f eines algebraischen {Zahlk\"orpers.}},
     journal = {Mathematische Annalen},
     pages = {444--466},
     publisher = {mathdoc},
     volume = {135},
     year = {1958},
     zbl = {0089.02302},
     url = {http://geodesic.mathdoc.fr/item/MAN_1958__135_160633/}
}