1. Polynomial Invariants of Finite Groups;Benson,1993
2. On the Gorenstein property for modular invariants;Braun;J. Algebra,2011
3. The direct summand property in modular invariant theory;Broer;Transform. Groups,2005
4. Cohen–Macaulay Rings;Bruns,1998
5. Representation Theory of Finite Groups and Associative Algebras;Curtis,1988