@article{GDZPPN002339129,
title = {On porcupine varieties in Lie algebras.},
journal = {Mathematische Annalen},
volume = {300},
year = {1994},
pages = {403-426},
zbl = {0791.17007},
url = {http://dml.mathdoc.fr/item/GDZPPN002339129}
}
Hofmann, Karl Heinrich; Ruppert, W.A.F. On porcupine varieties in Lie algebras.. Mathematische Annalen, Tome 300 (1994) pp. 403-426. http://gdmltest.u-ga.fr/item/GDZPPN002339129/