@article{1077312539,
author = {Chen, Bang-yen and Nagano, Tadashi},
title = {Totally geodesic submanifolds of symmetric spaces, I},
journal = {Duke Math. J.},
volume = {44},
number = {1},
year = {1977},
pages = { 745-755},
language = {en},
url = {http://dml.mathdoc.fr/item/1077312539}
}
Chen, Bang-yen; Nagano, Tadashi. Totally geodesic submanifolds of symmetric spaces, I. Duke Math. J., Tome 44 (1977) no. 1, pp. 745-755. http://gdmltest.u-ga.fr/item/1077312539/