@article{MZ_1928__27_167986,
     author = {A., Walfisz},
     title = {\"Uber {Gitterpunkte} in mehrdimensionalen {Kugeln}},
     journal = {Mathematische Zeitschrift},
     pages = {469--480},
     year = {1928},
     volume = {27},
     zbl = {53.0158.03},
     url = {http://geodesic.mathdoc.fr/item/MZ_1928__27_167986/}
}