Volume 16, Issue 2, June 2019, Pages 52-59
Abdullah Mohamad Sadiq; Walid Sayed Amin; Islam Al-Gammal
Volume 12, Issue 2, 2015, Pages 46-58
Shaker Mahmoud Awad; Doaa Samir Hizah; Walid Sayed Amin
Volume 6, Issue 2, 2009, Pages 13-24
Walid Said Amin; Rania Mostafa Abd El Rahman