M. Reid, “Surface cyclic quotient singularities and Hirzebruch–Jung resolutions”

http://www.warwick.ac.uk/~masda/surf/more/cyclic.pdf

M. Reid, “The Du Val singularities An, Dn, E6, E7, E8”

http://www.warwick.ac.uk/~masda/surf/more/DuVal.pdf

M. Reid, “McKay correspondence”

http://arxiv.org/abs/alg-geom/9702016

A. Craw, “The McKay correspondence and representations of the McKay quiver”, Chapter 1

http://www.maths.gla.ac.uk/~anc/pubs/thesis.ps

A. Craw, “Quiver representations in toric geometry”, Section 4

http://arxiv.org/abs/0807.2191

T. Logvinenko, “Natural G-Constellation Families”

http://arxiv.org/abs/math/0601014

Y. Yoshino, “Cohen-Macaulay modules over Cohen-Macaulay rings”, LMS Lecture Notes Series 146

http://books.google.co.uk/books?id=TBp132Yo0nUC (limited preview)

G.J. Leuschke and R. Wiegand, “Cohen-Macaulay Representations”

http://www.leuschke.org/CMReps-2011-12-31.pdf