@article{MZ_1960__74_169866,
     author = {Albrecht Fr\"ohlich},
     title = {Discriminants of algebraic number fields.},
     journal = {Mathematische Zeitschrift},
     pages = {18--28},
     year = {1960},
     volume = {74},
     zbl = {0098.03303},
     url = {http://geodesic.mathdoc.fr/item/MZ_1960__74_169866/}
}