@article{GDZPPN000364010,
title = {Helly-Type Theorems for Spheres.},
journal = {Discrete \& computational geometry},
volume = {4},
year = {1989},
pages = {279-286},
zbl = {0671.52009},
url = {http://dml.mathdoc.fr/item/GDZPPN000364010}
}
Maehara, H. Helly-Type Theorems for Spheres.. Discrete & computational geometry, Tome 4 (1989) pp. 279-286. http://gdmltest.u-ga.fr/item/GDZPPN000364010/