[1] S. Gagola, Unpublished course notes, Year(s) unknown.
[2] G. Glauberman, A characteristic subgroup of a p-stable group, Canad. J. Math., 20 (1968) 1101–1135.
[3] G. Glauberman and R. Solomon, A new characteristic subgroup of a p-stable group, J. Algebra, 368 (2012) 231–236.
[4] D. Gorenstein, Finite Groups (2nd ed.), AMS Chelsea Publishers, Providence RI (USA), 2007.
[5] I. M. Isaacs, An alternative proof of the Thompson replacement theorem. J. Algebra, 15 (1970) 149–150.
[6] M. yasir Kızmaz, An extension of the Glauberman ZJ-theorem, Int. J. Algebra and Comput., 31 (2021) 117–133.
[7] H. Kurzweil and B. Stellmacher, The Theory of Finite Groups: an Introduction, Springer-Verlag, New York, N.Y.
(USA), 2004.
[8] Stellmacher, B., An analogue to Glauberman’s ZJ-theorem, Proc. Amer. Math. Soc., 109 (1990) 925–929. Errata
in Proc. Amer. Math. Soc., 114 (1992) 588.