Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MOMA_1985__100_178248, author = {Karl H. Hofmann and Joachim Hilgert}, title = {Lorentzian {Cones} in {Real} {Lie} {Algebras.}}, journal = {Monatshefte f\"ur Mathematik}, pages = {183--210}, publisher = {mathdoc}, volume = {100}, year = {1985}, zbl = {0571.22015}, url = {http://geodesic.mathdoc.fr/item/MOMA_1985__100_178248/} }
Karl H. Hofmann; Joachim Hilgert. Lorentzian Cones in Real Lie Algebras.. Monatshefte für Mathematik, Tome 100 (1985), pp. 183-210. http://geodesic.mathdoc.fr/item/MOMA_1985__100_178248/