@article{BAG_1971__1_138069,
     author = {W. Maier},
     title = {Gitterpunkte auf {Kugeln} im {R2l}},
     journal = {Beitr\"age zur Algebra und Geometrie},
     pages = {65--72},
     publisher = {mathdoc},
     volume = {1},
     year = {1971},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/BAG_1971__1_138069/}
}