@article{1029000895, author = {Eberlein, Patrick}, title = {Product manifolds that are not negative space forms.}, journal = {Michigan Math. J.}, volume = {19}, number = {1}, year = {1972}, pages = { 225-231}, language = {en}, url = {http://dml.mathdoc.fr/item/1029000895} }
Eberlein, Patrick. Product manifolds that are not negative space forms.. Michigan Math. J., Tome 19 (1972) no. 1, pp. 225-231. http://gdmltest.u-ga.fr/item/1029000895/