@article{MAN_1922__85_158899,
     author = {M. Fujiwara},
     title = {Zahlengeometrische {Untersuchung} \"uber die extremen {Formen} f\"ur die indefiniten quadratischen {Formen}},
     journal = {Mathematische Annalen},
     pages = {21--25},
     publisher = {mathdoc},
     volume = {85},
     year = {1922},
     zbl = {48.0195.03},
     url = {http://geodesic.mathdoc.fr/item/MAN_1922__85_158899/}
}