Volume 19, Issue A-2, December 2008, Pages 109-118
ASHRAF M. SEIDA; MAHMOUD M. GABR; GABR EZZ M. EL-GAMAL; HASSAN K. IBRAHIM; MOHAMED S. EL-GHARIB
Volume 19, Issue 1-A, June 2008, Pages 91-100
ASHRAF M. SEIDA; EZZ M. EL-GAMAL; MAHMOUD M. GABR; HASSAN K. IBRAHIM; MOHAMED S. EL-GHARIB