@article{02186437,
title = {Naturally graded },
journal = {Journal of Lie Theory},
volume = {15},
year = {2005},
pages = {379-391},
zbl = {1070.17003},
language = {en},
url = {http://dml.mathdoc.fr/item/02186437}
}
Cabezas, J.M.; Pastor, E. Naturally graded . Journal of Lie Theory, Tome 15 (2005) pp. 379-391. http://gdmltest.u-ga.fr/item/02186437/