@article{PPN266833020_0195+dmdlog40,
title = {Some Complete Manifolds with Non-Negative Curvature Operator.},
journal = {Mathematische Zeitschrift},
volume = {194},
year = {1987},
pages = {383-390},
zbl = {0602.53033},
url = {http://dml.mathdoc.fr/item/PPN266833020_0195+dmdlog40}
}
Baldin, Y.Y.; Noronha, Maria H. Some Complete Manifolds with Non-Negative Curvature Operator.. Mathematische Zeitschrift, Tome 194 (1987) pp. 383-390. http://gdmltest.u-ga.fr/item/PPN266833020_0195+dmdlog40/