Volume 22, Issue 1, May and June 2021, Pages 74-88
Megahed, H; El-Nagdy, M; Abelgawad, H; Khalil, M
Volume 21, Issue 2, December 2020, Pages 80-102
Khalil, M M
Volume 15, Issue 15, December 2017, Pages 6-21
Elmaghraby, Sh; Khalil, M; Kani, A.