@article{GDZPPN002111764,
title = {Embeddings of U3 (8), Sz (8) and the Rudvalis group in algebraic groups of type E7.},
journal = {Inventiones mathematicae},
volume = {115},
year = {1994},
pages = {215-242},
zbl = {0796.20014},
url = {http://dml.mathdoc.fr/item/GDZPPN002111764}
}
Griess, Robert L. Jr.; Ryba, A.J.E. Embeddings of U3 (8), Sz (8) and the Rudvalis group in algebraic groups of type E7.. Inventiones mathematicae, Tome 115 (1994) pp. 215-242. http://gdmltest.u-ga.fr/item/GDZPPN002111764/