@article{JOLT_2006_16_4_a7,
     author = {Zinovy Reichstein and Angelo Vistoli},
     title = {Birational {Isomorphisms} between {Twisted} {Group} {Actions}},
     journal = {Journal of Lie Theory},
     pages = {791--802},
     year = {2006},
     volume = {16},
     number = {4},
     url = {http://geodesic.mathdoc.fr/item/JOLT_2006_16_4_a7/}
}