1. Power-associative rings;Albert, A. A.;Trans. Amer. Math. Soc.,1948
2. A theory of trace-admissible algebras;Albert, A. A.;Proc. Nat. Acad. Sci. U.S.A.,1949
3. A structure theory for Jordan algebras;Albert, A. A.;Ann. of Math. (2),1947
4. Extensions of general algebras;Eilenberg, Samuel;Ann. Soc. Polon. Math.,1948
5. A theorem on the structure of Jordan algebras;Jacobson, N.;Proc. Nat. Acad. Sci. U.S.A.,1956