Volume 34, Issue 1, January 2011, Pages 31-45
Ashraf Kamel; Esam Kamel
Volume 34, Issue 1, January 2011, Pages 102-118
Ashraf Kamel
Volume 27, Issue 1, January 2004, Pages 1-23
Usama EI-Barrany; Ashraf Kamel
Volume 26, Issue 1, January 2003, Pages 171-194
Dina Radwan; Hanan Amin; Ashraf Kamel