Volume 59, Issue 137, April 2013, Pages 157-165
ISMAIL S. MOHAMAD; MOHAMED W. ABD AL-AZEEM; MAHMOUD M. MAHMOUD; AML MOKHTAR M. ABD-EL AAL
Volume 41.2, Issue 82, July 1999, Pages 15-32
K.F. Abuo-Easa; M. Abd-El-Gawad