1. Elements of the Representation Theory of Associative Algebras, vol. 1;Assem,2006
2. Representation Theory of Artin Algebras;Auslander,1995
3. Lattice Theory;Birkhoff,1967
4. Generalizations of the Bernstein–Gelfand–Ponomarev reflection functors;Brenner,1980
5. Auslander–Reiten sequences and representation-finite algebras;Gabriel,1980