1. Auslander, M., Reiten, I. and SmalØ, S. O., Representation Theory of Artin Algebras, Cambridge Studies in Adv. Math., 36, Cambridge Univ. Press, Cambridge, 1995.
2. Beilinson, A. A., Bernstein, J. and Deligne, P., Faisceaux Perves, Astérique, 100, Soc. Math., France, 1982.
3. Buchweitz, R. O., Maximal Cohen-Macaulay modules and Tate-cohomology over Gorenstein rings, unpublished manuscrip, 1987, http://hdl.handle.net/1807/16682.
4. Chen, X. W., Singularity categories, Schur functors and triangular matrix rings, Algebr. Represent. Theory, 12, 2009, 181–191.
5. Chen, X. W., The singularity category of an algebra with radical square zero, Documenta Mathematica., 16, 2011, 921–936.