@article{1178245051,
author = {Ishihara, Shigeru and Obata, Morio},
title = {Affine transformations in a Riemannian manifold},
journal = {Tohoku Math. J. (2)},
volume = {7},
number = {3},
year = {1955},
pages = { 146-150},
language = {en},
url = {http://dml.mathdoc.fr/item/1178245051}
}
Ishihara, Shigeru; Obata, Morio. Affine transformations in a Riemannian manifold. Tohoku Math. J. (2), Tome 7 (1955) no. 3, pp. 146-150. http://gdmltest.u-ga.fr/item/1178245051/