@article{MZ_1942__47_168947,
     author = {J., Heinhold},
     title = {Zur {Geometrie} der {Zahlen}},
     journal = {Mathematische Zeitschrift},
     pages = {199--214},
     year = {1942},
     volume = {47},
     zbl = {67.0139.03},
     url = {http://geodesic.mathdoc.fr/item/MZ_1942__47_168947/}
}