Volume 34, Issue 1, January 2011, Pages 1-9
M. M. Elkholy; H. M. Elshwey; A. F. Abdel-kader
Volume 32, Issue 1, January 2009, Pages 11-20
M. A. Shanab; M. M. Khater; A. H. Morsi
Volume 31, Issue 4, October 2008, Pages 337-343
H. Abdel-Maksoud; , M. M. Khater; A.M. Oshieba