@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/}
}