Volume 28, Issue 2, December 2020, Pages 639-649
Fathy Abdel_Azeem; Amer Adel Helal; Hany Thabel; Ahmed Mohamed Naguib Elbaz
Volume 28, Issue 3, September 2020, Pages 829-843
Ibraheim El-Wardany; Abdel-Hamid Abdel-Hamid; Ayman Morsi; Asmaa shawkey Elnaggar