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@article{MAN_1994__298_2_165178, author = {Karl Heinrich Hofmann and W.A.F. Ruppert}, title = {On porcupine varieties in {Lie} algebras.}, journal = {Mathematische Annalen}, pages = {403--426}, publisher = {mathdoc}, volume = {298}, number = {2}, year = {1994}, zbl = {0791.17007}, url = {http://geodesic.mathdoc.fr/item/MAN_1994__298_2_165178/} }
Karl Heinrich Hofmann; W.A.F. Ruppert. On porcupine varieties in Lie algebras.. Mathematische Annalen, Tome 298 (1994) no. 2, pp. 403-426. http://geodesic.mathdoc.fr/item/MAN_1994__298_2_165178/