@article{1178241291,
author = {Ii, Kiyotaka},
title = {Curvature and spectrum of Riemannian manifold},
journal = {Tohoku Math. J. (2)},
volume = {25},
number = {4},
year = {1973},
pages = { 557-567},
language = {en},
url = {http://dml.mathdoc.fr/item/1178241291}
}
Ii, Kiyotaka. Curvature and spectrum of Riemannian manifold. Tohoku Math. J. (2), Tome 25 (1973) no. 4, pp. 557-567. http://gdmltest.u-ga.fr/item/1178241291/