1. Berberian S. K.:1973, Lectures in Funtional Analysis and Operator Theory Springer-Verlag. G.T.M.
2. Cabrera Garcia M. and Rodriguez Palacios A. A new proof of the Gelfand-Mazur-Kaplansky Theorem. á paraitre dans Proc. Amer. Math. Soc.
3. Cuenca Mira J. A.:1992, On one-sided division infinite-dimensional normed real algebras. Publications matemdtiques, vol.36, pp.485–488.
4. El-Mallah M. L. et Micali A.:1980, Sur les algébres normées sans diviseurs topologiques de zéro. Boletin de 1a Sociedad Matemdtica Mexicana, vol 25, pp.23–28.
5. Jacobson N.:1956, A theorem on the structure of Jordan algebras, Proc. Nat. Acad. Sci. U.S.A., vol 42, pp.140–147.