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@article{CMH_1979__54_139769, author = {Wim Hesselink}, title = {The normality of closures of orbits in a {Lie} algebra.}, journal = {Commentarii mathematici Helvetici}, pages = {105--110}, publisher = {mathdoc}, volume = {54}, year = {1979}, zbl = {0395.14014}, url = {http://geodesic.mathdoc.fr/item/CMH_1979__54_139769/} }
Wim Hesselink. The normality of closures of orbits in a Lie algebra.. Commentarii mathematici Helvetici, Tome 54 (1979), pp. 105-110. http://geodesic.mathdoc.fr/item/CMH_1979__54_139769/