Volume 56, Issue 127, October 2010, Pages 1-15
S.S.A. SHARAWI; E.M. EL-NAHAS; A.S. EL-HABBAA
Volume 55, Issue 122, July 2009, Pages 1-12
S.M. ABD-ALLAH; A. GOMAA; E.M.M. ABD-EL-GAWAD; E.M. EL-NAHAS