Volume 87, Issue 2, June 2009, Pages 579-589
ABEER E. A. AMER; SOAD A. SHERIF; IBRAHEM M. ROUSHDY; MOHAMED N. EL-MAGDOUB
Volume 86, Issue 4, December 2008, Pages 1577-1589
OMR R. M. MASOUD; AHMED M. HASSANEIN; ZAHER S. MOHAMED