Volume 14, Issue 4, December 2021, Pages 19-34
Ramadan M. El-Ashry; M. A.M. Hegab
Volume 12, Issue 2, March 2019, Pages 99-108
Hassan A. Nabil; M. A.M. Hegab
Volume 11, Issue 6, December 2018, Pages 11-20
M. A.M. Hegab