1. Local methods in block theory;Alperin;Ann. of Math. (2),1979
2. A Frobenius theorem for blocks;Broué;Invent. Math.,1980
3. M. Cabanes, Extensions of p-groups and construction of characters, Comm. Algebra.
4. The Representation Theory of Finite Groups;Feit,1982
5. Character Theory of Finite Groups;Isaacs,1976