@article{GDZPPN002309211,
title = {Roots and Maximal Tori in Finite Forms of Semisimple Algebraic Groups.},
journal = {Mathematische Annalen},
volume = {212},
year = {1974},
pages = {301-314},
zbl = {0262.20057},
url = {http://dml.mathdoc.fr/item/GDZPPN002309211}
}
Veldkamp, F.D. Roots and Maximal Tori in Finite Forms of Semisimple Algebraic Groups.. Mathematische Annalen, Tome 212 (1974) pp. 301-314. http://gdmltest.u-ga.fr/item/GDZPPN002309211/