M. Asaad, M. Ramadan and M. Ezzat; Finite groups with normal subgroups of prime power order, PU. M. A., 3(5)(1994), 251-256.

M. Asaad and M. Ezzat Mohamed; Finite groups with quasinormal subgroups of prime power order. Acta Math. Hungar., 89(4)(2000), 321–326.

M. Asaad and M. Ezzat Mohamed; On generalized hypercenter of a finite group. Comm. in Algebra, 29(5)(2001), 2239 – 2248.

M. Asaad and M. Ezzat Mohamed; On c-normality of finite groups. J. Aust. Math. Soc. 78(2005), 297 – 304.

M. Asaad, A. A. Heliel and M. Ezzat Mohamed, Finite groups with some subgroups of prime power order S-quasinormally embedded, Comm. in Algebra 32 (2004), 2019-2027.

M. Ezzat Mohamed and M. Ramadan; Some results on the generalized hypercenter of finite groups, Acta Math. Hungar. 105(1-2)(2004), 121–127.

M. Ramadan and M. Ezzat Mohamed; The influence of c-supplementation on the structure of finite groups, J. Egy. of Math. Soc., 12(1)(2004), 1 – 5.

M. Asaad, A. A. Heliel, M. Ezzat Mohamed and P. Csorgo, Finite groups with some subgroups permutable with all Sylow subgroups, JP Jour. Algebra, Number Theory & Appl. 4 (3) (2004), 437-446.

M. Ramadan, M. Ezzat Mohamed and A. A. Heliel; On c-normality of certain subgroups of prime power order of finite groups. Arch. Math. 85 (2005), 203 – 210.

M. Ezzat Mohamed, A. Shaalan and M. I. Elashiry; Some results on the hyperquasicenter of finite groups, JP Jour. Algebra, Number Theory & Appl. 6(3)(2006), 455-464.

M. Ezzat Mohamed, Finite groups whose -hypercenter contains certain subgroups of prime power order, Algebra colloquium (to appear).

M. Ezzat Mohamed, On weakly S-supplementation of finite groups, JP Journal of Algebra, Number Theory and Applications. (to appear).