@article{MAN_1958__136_160659,
     author = {N. Jacobson},
     title = {Nilpotent {Elements} in {Semi-simple} {Jordan} {Algebras.}},
     journal = {Mathematische Annalen},
     pages = {375--386},
     year = {1958},
     volume = {136},
     zbl = {0083.02604},
     url = {http://geodesic.mathdoc.fr/item/MAN_1958__136_160659/}
}