@article{MAN_1974__207_162548,
     author = {F.D. Veldkamp},
     title = {Roots and {Maximal} {Tori} in {Finite} {Forms} of {Semisimple} {Algebraic}   {Groups.}},
     journal = {Mathematische Annalen},
     pages = {301--314},
     publisher = {mathdoc},
     volume = {207},
     year = {1974},
     zbl = {0262.20057},
     url = {http://geodesic.mathdoc.fr/item/MAN_1974__207_162548/}
}