Volume 20, Issue 2, June 1995, Pages 14-24
Fawzy Nagy El-Sabbahy; Mahmoud Ibrahim Abbas
Volume 20, Issue 1, March 1995, Pages 23-32
Fawzy El-Sabbahy; M. Kassem; R. M. Ramadan
Volume 19, Issue 4, December 1994, Pages 80-89
Fawzy Nagy El-Sabbahy