1. Barry, M.J.J., Ward, M.B.: Simple groups contain minimal simple groups. Publ. Mat. 41(2), 411–415 (1997)
2. Blum-Smith, B.: Two Inquiries About Finite Groups and Well-Behaved Quotients. Ph.D. thesis, New York University (2017)
3. Graduate Studies in Mathematics;DA Cox,2011
4. Dickson, L.E.: Linear Groups, with an Exposition of the Galois Field Theory. Teubner, Leipzig (1901)
5. Pure and Applied Mathematics;L Dornhoff,1971