Voir la notice de l'article provenant de la source Heldermann Verlag
@article{JLT_1991_1_1_a5, author = {U. Zimmermann}, title = {Invariante {Kegel} in {Cartan-Algebren}}, journal = {Journal of Lie theory}, pages = {055--064}, publisher = {mathdoc}, volume = {1}, number = {1}, year = {1991}, url = {http://geodesic.mathdoc.fr/item/JLT_1991_1_1_a5/} }
U. Zimmermann. Invariante Kegel in Cartan-Algebren. Journal of Lie theory, Tome 1 (1991) no. 1, pp. 055-064. http://geodesic.mathdoc.fr/item/JLT_1991_1_1_a5/