[1] F. Ali, Fischer-Clifford Theory for Split and Non-Split Group Extensions, Ph. D. thesis, University of Natal, Pieter-maritzburg, 2001.
[2] A. Basheer and J. Moori, On the non-split extension group 26·Sp(6,2), Bull. Iranian Math. Soc., 39 (2013) 1189–1212.
[3] J. H. Conway, R.T. Curtis, S. P. Norton, R. A. Parker and R. A. Wilson, Atlas of Finite Groups, Oxford University Press, Oxford, 1985.
[4] R. Gow, Some characters of affine subgroups of classical groups, J. London Math. Soc. (2), 2 (1976) 231–236.
[5] The GAP Group, GAP-Groups, Algorithms, and Programming, Version 4.4.
[6] J. Moori and T. Seretlo, On the Fischer-Clifford matrices of a maximal subgroup of the Lyons group Ly, Bul. of Iranian Math Soc., 39 (2013) 1037-1052.
[7] Z. E. Mpono, Fischer Clifford Theory and Character Tables of Group Extensions, Ph. D. thesis, University of Natal, Pietermaritzburg, 1998.
[8] B. G. Rodrigues, On the Theory and Examples of Group Extensions, Master’s thesis, University of Natal, Pieter-maritzburg, 1999.
[9] J. J. Rotman, An Introduction to the Theory of Groups, Fourth ed., Springer-Verlag, New York, Inc., 1995.