1. Representation Theory of Finite Groups and Associative Algebras;Curtis,1962
2. J. D. Donald and F. J. Flanigan, Deformation methods and the strong unbounded representation type of p-groups, to appear.
3. J. D. Donald and F. J. Flanigan, Parameter varieties of finite group representations, to appear.
4. On the deformation of rings and algebras;Gerstenhaber;Ann. of Math.,1964
5. Indecomposable representations;Heller;Ill. J. Math.,1961