1. Representation Theory of Artin Algebras;Auslander,1995
2. The derived equivalence classification of representation-finite selfinjective algebras;Asashiba;J. Algebra,1999
3. The almost split sequence starting with a simple module;Brenner;Arch. Math.,1994
4. E. Fernández, Extensiones Triviales y Álgebras Inclinadas Iteradas, Ph.D. thesis, Universidad Nacional del Sur, Argentina, 1999.
5. Trivial Extensions of Abelian Categories;Fossum,1975