@article{GDZPPN002442027,
title = {Differentiable sphere theorems for Ricci curvature.},
journal = {Mathematische Zeitschrift},
volume = {212},
year = {1993},
pages = {245-260},
zbl = {0844.53028},
url = {http://dml.mathdoc.fr/item/GDZPPN002442027}
}
Pacelli Bessa, Gregório. Differentiable sphere theorems for Ricci curvature.. Mathematische Zeitschrift, Tome 212 (1993) pp. 245-260. http://gdmltest.u-ga.fr/item/GDZPPN002442027/