Volume 22, Issue 2-A, December 2011, Pages 165-180
MAHMOUD M. ABDELALL; SHABAN I. MOHAMED; AHMED H. HALAWA; AHMED A. HASSAN; MOHAMED A. ELNASSAG
Volume 22, Issue 1-A, June 2011, Pages 21-36
MOHAMED H. HELAL
Volume 20, Issue 2-A, December 2009, Pages 75-88