@article{1077473104,
author = {Chern, Shiing-shen},
title = {Some new characterizations of the Euclidean sphere},
journal = {Duke Math. J.},
volume = {12},
number = {1},
year = {1945},
pages = { 279-290},
language = {en},
url = {http://dml.mathdoc.fr/item/1077473104}
}
Chern, Shiing-shen. Some new characterizations of the Euclidean sphere. Duke Math. J., Tome 12 (1945) no. 1, pp. 279-290. http://gdmltest.u-ga.fr/item/1077473104/