1. Matrices derived from finite abelian groups;Chalkley;Math. Mag.,1976
2. R. Chalkley, A matrix-oriented approach to group algebras (unpublished notes).
3. Circulant Matrices;Davis,1979
4. Über Gruppencharaktere;Frobenius;S.-B. Preuss. Akad. Berlin,1896
5. Über die Primfactoren der Gruppendeterminante;Frobenius;S.-B. Preuss. Akad. Berlin,1896