@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/