1. Investigations on Group Characters
2. Über die darstellung der symmetrischen und der alternierenden gruppen durch gebrochene lineare Substitutionen;Schur;J. Für Math,1911
3. Groups which have a faithful representation of degree less than p-1;Feit;Trans. of A.M.S.,1964
4. The modular representation algebra of a finite group;Green;111. J. Math.,1962