Volume 23, Issue 2-A, December 2012, Pages 45-60
I. M. ABD ELLAH; M. ELNAWAWY; A. M. ELEWA
Volume 23, Issue 1-A, June 2012, Pages 13-21
M. ELNAWAWY; RABIE S. FARAG; YASSER A. ABD ELKADER; A. M. ADAWAY; S. R. AL-SALAM