@article{MAN_1901__54_157996,
     author = {Hermann Minkowski},
     title = {Ueber die {Ann\"aherung} an eine reelle {Gr\"osse} durch rationale {Zahlen}},
     journal = {Mathematische Annalen},
     pages = {91--124},
     publisher = {mathdoc},
     volume = {54},
     year = {1901},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MAN_1901__54_157996/}
}