1. [4] W. Bruns and J. Herzog, Cohen–Macaulay rings, Cambridge Studies in Advanced Mathematics 39, Cambridge University Press, 1993.
2. [1] T. Araya, “The Auslander–Reiten conjecture for Gorenstein rings”, Proc. Amer. Math. Soc. 137:6 (2009), 1941–1944.
3. [2] M. Auslander and E. L. Green, “Trace quotient modules”, Illinois Journal of Mathematics 32:3 (1988), 534–556.
4. [3] D. J. Benson, Representations and cohomology, I: Basic representation theory of finite groups and associative algebras, 2nd ed., Cambridge Studies in Advanced Mathematics 30, Cambridge University Press, 1998.
5. [5] C. Huneke and R. Wiegand, “Tensor products of modules and the rigidity of ”, Math. Ann. 299:3 (1994), 449–476.