Volume 49, Issue 10, October 2020, Pages 1-42
Eman F. A. El-Sayed; Gamal Sh. Ahmed; Sohair A. El-Attar
Volume 49, Issue 6, June 2020, Pages 59-96
Ahmed M. Hadary; Gamal S. Ahmed; Mohammad A. Mahrous
Volume 49, Issue 5, May 2020, Pages 24-54
Ghada S. Abdel Majeed; Gamal S. Ahmed; Essam El-Din A. Sayed