@article{CRMATH_2007__345_6_307_0,
     author = {Chernousov, Vladimir and Panin, Ivan},
     title = {Purity of $ {G}_{2}$-torsors},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {307--312},
     publisher = {Elsevier},
     volume = {345},
     number = {6},
     year = {2007},
     doi = {10.1016/j.crma.2007.07.018},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2007.07.018/}
}