@article{PDML_1987___2A_63_0,
     author = {Pradines, Jean},
     title = {Vari\'et\'es d'orbites},
     journal = {Publications du D\'epartement de math\'ematiques (Lyon)},
     pages = {63--70},
     publisher = {Universit\'e Claude Bernard - Lyon 1},
     number = {2A},
     year = {1987},
     zbl = {0619.57008},
     mrnumber = {996654},
     language = {fr},
     url = {http://www.numdam.org/item/PDML_1987___2A_63_0/}
}