@article{10_1090_S0894_0347_00_00327_1,
     author = {Berenstein, Arkady and Sjamaar, Reyer},
     title = {Coadjoint orbits, moment polytopes, and the {Hilbert-Mumford} criterion},
     journal = {Journal of the American Mathematical Society},
     pages = {433--466},
     publisher = {mathdoc},
     volume = {13},
     number = {2},
     year = {2000},
     doi = {10.1090/S0894-0347-00-00327-1},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-00-00327-1/}
}