Volume 21, Issue 1, January 2007, Pages 63-77
Atif A. Awadalla; Mohamed S.A. Ewees; Samir A.M. Moussa
Volume 21, Issue 1, January 2007, Pages 113-120
Abdel Moniem I. Fathi; Samir A.M. Moussa; Ibrahim M.A. Hegazi