@article{MZ_1980__173_172981,
     author = {Falko Lorenz},
     title = {\"Uber eine {Verallgemeinerung} des {Hasseschen} {Normensatzes.}},
     journal = {Mathematische Zeitschrift},
     pages = {203--210},
     publisher = {mathdoc},
     volume = {173},
     year = {1980},
     zbl = {0437.12009},
     url = {http://geodesic.mathdoc.fr/item/MZ_1980__173_172981/}
}