@article{GDZPPN002408406,
title = {Some Properties of the Curvature Operator of a Riemannian Manifold.},
journal = {Mathematische Zeitschrift},
volume = {121},
year = {1971},
pages = {283-286},
zbl = {0195.23503},
url = {http://dml.mathdoc.fr/item/GDZPPN002408406}
}
Tsagas, Grigorios. Some Properties of the Curvature Operator of a Riemannian Manifold.. Mathematische Zeitschrift, Tome 121 (1971) pp. 283-286. http://gdmltest.u-ga.fr/item/GDZPPN002408406/