@article{GDZPPN002427168,
title = {The Tightness of Extrinsic Symmetric Submanifolds.},
journal = {Mathematische Zeitschrift},
volume = {180},
year = {1982},
pages = {563-566},
zbl = {0488.53041},
url = {http://dml.mathdoc.fr/item/GDZPPN002427168}
}
Ferus, Dirk. The Tightness of Extrinsic Symmetric Submanifolds.. Mathematische Zeitschrift, Tome 180 (1982) pp. 563-566. http://gdmltest.u-ga.fr/item/GDZPPN002427168/