@article{DAN_1964_158_4_a2,
     author = {V. E. Voskresenskii},
     title = {The behaviour of semi-simple algebraic groups under extension of the ground field},
     journal = {Doklady Akademii Nauk},
     pages = {767--769},
     publisher = {mathdoc},
     volume = {158},
     number = {4},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_158_4_a2/}
}