@article{GDZPPN002067617,
title = {Some examples of higher rank manifolds of nonnegative curvature.},
journal = {Commentarii mathematici Helvetici},
volume = {65},
year = {1990},
pages = {299-317},
zbl = {0713.53029},
url = {http://dml.mathdoc.fr/item/GDZPPN002067617}
}
Strake, M.; Spatzier, R.J. Some examples of higher rank manifolds of nonnegative curvature.. Commentarii mathematici Helvetici, Tome 65 (1990) pp. 299-317. http://gdmltest.u-ga.fr/item/GDZPPN002067617/