1. Representation of *-algebras;Arens, Richard;Duke Math. J.,1947
2. Linear topological division algebras;Arens, Richard;Bull. Amer. Math. Soc.,1947
3. The theory of simple rings;Artin, Emil;Amer. J. Math.,1943
4. Radicals and subdirect sums;Brown, Bailey;Amer. J. Math.,1947
5. On the commutativity of certain rings;Forsythe, Alexandra;Bull. Amer. Math. Soc.,1946