Volume 7, Issue 1, June 1982, Pages 13-23
Samir F. Hanna; Mahmoud Awad; O. A. Azim; Nabil S. Matta
Volume 6, Issue 2, December 1981, Pages 1-9
Samir F. Hanna; Mahmoud M. Awad; Nabil S. Matta
Volume 6, Issue 1, June 1981, Pages 122-137
Samir F. Hanna; Mahmoud M. Awad; Nabil S. Matta; Rashad M. El-Badrawy