Volume 9, Issue 1, April 2011, Pages 161-187
M. I. Abd El- Aziz; K. A. El Shazly; Eman, M. E. El Sherbeney
Volume 7, Issue 1, May 2009, Pages 746-758
Maha A E Awad Alla; Yousef A Ahmed; Yasmin A Abd Rabouh