1. On the modular characters of groups;Brauer;Ann. of Math.,1941
2. The Algebraic Theory of Semigroups;Clifford,1961
3. The Algebraic Theory of Semigroups;Clifford,1967
4. Representation Theory of Finite Groups and Associative Algebras;Curtis,1962
5. On algebras of finite representation type;Dickson;Trans. Amer. Math. Soc.,1969