@article{00778314,
title = {A sphere problem in Euclidean space. (Ein Kugelproblem im euklidischen Raum.)},
journal = {Mathematica Pannonica},
volume = {6},
year = {1995},
pages = {11-28},
zbl = {0827.53004},
language = {en},
url = {http://dml.mathdoc.fr/item/00778314}
}
Sachs, Hans. A sphere problem in Euclidean space. (Ein Kugelproblem im euklidischen Raum.). Mathematica Pannonica, Tome 6 (1995) pp. 11-28. http://gdmltest.u-ga.fr/item/00778314/