@article{GDZPPN00222559X,
title = {Springer Forms and the First Tits Construction of Exceptional Jordan Division Algebras.},
journal = {Manuscripta mathematica},
volume = {43},
year = {1983},
pages = {249-272},
zbl = {0536.17009},
url = {http://dml.mathdoc.fr/item/GDZPPN00222559X}
}
Petersson, Holger P.; Racine, M.L. Springer Forms and the First Tits Construction of Exceptional Jordan Division Algebras.. Manuscripta mathematica, Tome 43 (1983) pp. 249-272. http://gdmltest.u-ga.fr/item/GDZPPN00222559X/