1. Jordan-Algebren;Braun,1966
2. Centralizers in Jordan algebras;Harris;Pacific J. Math.,1958
3. Operator commutativity in Jordan algebras;Jacobson,1952
4. N. Jacobson, “Structure and Representations of Jordan Algebras,” Amer. Math. Soc. Colloq. Publ. Vol. XXXIX, Providence, R.I.
5. Lectures on Jordan Triple Systems;Loos;University of British Columbia Lecture Notes,1971