@article{1183497247,
author = {Levy, Harry},
title = {Curvatures in Riemannian space},
journal = {Bull. Amer. Math. Soc.},
volume = {40},
number = {12},
year = {1934},
pages = { 75-78},
language = {en},
url = {http://dml.mathdoc.fr/item/1183497247}
}
Levy, Harry. Curvatures in Riemannian space. Bull. Amer. Math. Soc., Tome 40 (1934) no. 12, pp. 75-78. http://gdmltest.u-ga.fr/item/1183497247/