1. Blichfeldt, H.F.: Finite Collineation Groups. The University of Chicago Press, Chicago (1917)
2. Carter, R.W.: Centralizers of semisimple elements in the finite classical groups. Proc. London Math. Soc. 42(1), 1–41 (1981)
3. Carter, R.W.: Finite Groups of Lie Type. Wiley, New York (1985)
4. Conway, J.H., Curtis, R.T., Norton, S.P., Parker, R.A., Wilson, R.A.: Atlas of Finite Groups. Oxford University Press, Oxford (1985)
5. Cram, G.M.: On the field of character values of finite solvable groups. Arch. Math. (Basel) 51(4), 294–296 (1988)