Volume 9, Issue 1, June 2000, Pages 29-37
Ahmed Ismail
Volume 8, Issue 1, June 1999, Pages 68-75
Mahmoud Mahdy; Hanaa El-Ghamry; Ahmed Ismail
Volume 7, Issue 1, June 1998, Pages 111-120
Ahmed Ismail; Mohamed Abd El-Mohsen; Hanaa El-Ghamry