@article{10_1090_S0894_0347_1994_1239505_8,
     author = {Brylinski, Ranee and Kostant, Bertram},
     title = {Nilpotent orbits, normality and {Hamiltonian} group actions},
     journal = {Journal of the American Mathematical Society},
     pages = {269--298},
     publisher = {mathdoc},
     volume = {07},
     number = {2},
     year = {1994},
     doi = {10.1090/S0894-0347-1994-1239505-8},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-1994-1239505-8/}
}