@article{CMH_1982__57_139922,
     author = {Hanspeter Kraft and Claudio Procesi},
     title = {On the geometry of conjugacy classes in classical groupes.},
     journal = {Commentarii mathematici Helvetici},
     pages = {539--602},
     publisher = {mathdoc},
     volume = {57},
     year = {1982},
     zbl = {0511.14023},
     url = {http://geodesic.mathdoc.fr/item/CMH_1982__57_139922/}
}