@article{GDZPPN00230547X,
title = {On the Intrinsic Geometry of Sn x Sn.},
journal = {Mathematische Annalen},
volume = {193},
year = {1971},
pages = {68-77},
zbl = {0209.53302},
url = {http://dml.mathdoc.fr/item/GDZPPN00230547X}
}
BLAIR, D.E.; LUDDEN, G.D.; YANO, K. On the Intrinsic Geometry of Sn x Sn.. Mathematische Annalen, Tome 193 (1971) pp. 68-77. http://gdmltest.u-ga.fr/item/GDZPPN00230547X/