@article{GDZPPN002198487,
title = {Differential geometry of geodesic spheres.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {329},
year = {1981},
pages = {28-67},
zbl = {0503.53013},
url = {http://dml.mathdoc.fr/item/GDZPPN002198487}
}
Vanhecke, L.; Chen, B.-Y. Differential geometry of geodesic spheres.. Journal für die reine und angewandte Mathematik, Tome 329 (1981) pp. 28-67. http://gdmltest.u-ga.fr/item/GDZPPN002198487/