Volume 37, Issue 2, April 2014, Pages 165-177
Sahar.S. Kaddah; Ragab.A. Elsehiemy; Alaa .A. Zaky
Volume 31, Issue 1, January 2008, Pages 49-58
A. A. Abou El-Ela; G. E. M. Ali; H. A. Abd El-Ghany