Volume 17, Issue 2, June 1992, Pages 24-41
Hafez M. El-Zayyat; Zuhair H. El-Isa; Adel A. El-Tayem; Bahjat A. Abdel-Fattah
Volume 16, Issue 2, December 1991, Pages 112-126
Hafez El-Zayyat; Zainel-Abideen Tahboub; Fawwaz El-Karmi