Volume 15, Issue 2, 2018, Pages 30-35
Hany Ahmed Khattab; Sally Fathy Elsayed
Volume 15, Issue 3, December 2018, Pages 111-116
Sally Fathy Elsayed; Mohamed Abd El- Aziz Abed
Volume 13, Issue 1, 2016, Pages 167-182
Noha Ismaeil Elshaaer; Sally Fathy Elsayed