Volume 36, Issue 1, March 2011, Pages 1-14
Ahmed Hamed; ElShafei Zeidan; Ayman Aly
Volume 26, Issue 1, March 2001, Pages 29-41
Ahmed Abd El-Razek Ahmed Sultan
Volume 24, Issue 4, December 1999, Pages 1-13
Helmy El-Sayed Ibrahim Gad; Ahmed Mohamed Hamed Kandel; Ibrahim Ibrahim Ali El-Sharkawy