@article{10_4153_CMB_2003_021_6,
     author = {Levy, Jason},
     title = {Rationality and {Orbit} {Closures}},
     journal = {Canadian mathematical bulletin},
     pages = {204--215},
     year = {2003},
     volume = {46},
     number = {2},
     doi = {10.4153/CMB-2003-021-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2003-021-6/}
}