@article{05827440,
title = {Variations on a theme of groups splitting by a quadratic extension and Grothendieck-Serre conjecture for group schemes },
journal = {Documenta Mathematica},
volume = {15},
year = {2010},
pages = {147-169},
zbl = {1210.14050},
language = {en},
url = {http://dml.mathdoc.fr/item/05827440}
}
Chernousov, V. Variations on a theme of groups splitting by a quadratic extension and Grothendieck-Serre conjecture for group schemes . Documenta Mathematica, Tome 15 (2010) pp. 147-169. http://gdmltest.u-ga.fr/item/05827440/