@article{GDZPPN002327570, title = {Nonnegatively Curved Totally Real Submanifolds.}, journal = {Mathematische Annalen}, volume = {270}, year = {1985}, pages = {345-348}, zbl = {0562.53036}, url = {http://dml.mathdoc.fr/item/GDZPPN002327570} }
Urbano, Francisco. Nonnegatively Curved Totally Real Submanifolds.. Mathematische Annalen, Tome 270 (1985) pp. 345-348. http://gdmltest.u-ga.fr/item/GDZPPN002327570/