1. Amitsur, S. A.: On central division algebras. Israel J. Math. 12, 408–420 (1972).
2. Artin, E., Whaples, G.: The theory of simple rings. Amer. J. Math. 65, 87–107 (1943).
3. Artin, E., Nesbitt, E., Thrall, R.: Rings with Minimum Condition. Ann Arbor: University of Michigan Press 1944.
4. Auslander, M., Goldman, O.: The Brauer group of a commutative ring. Trans. Amer. Math. Soc. 97, 367–409 (1960).
5. Bass, H.: The Morita Theorems. (Lecture Notes.) Department of Mathematics, University of Oregon, Eugene 1962.