Volume 40, Issue 5, December 2015, Pages 57-65
Abdelsamed Ghazi Rashid; Ahmed Abd-Elsalam Hegazi; Farouk Mohamed Okasha
Volume 29, Issue 2, June 2004, Pages 1-13
Y. E. Abdel-Ghaffar
Volume 26, Issue 2, June 2001, Pages 39-53
Farouk Mohamed Okashaa El-Sayed