Volume 59, Issue 139, October 2013, Pages 39-44
MANAL M. SAYED; HOSSAM M. OMAR
Volume 58, Issue 133, April 2012, Pages 14-24
MANAL M. SAYED; D.A. SALEM; A.A. SHARKAWY; O.A. SHEHATA
Volume 56, Issue 127, October 2010, Pages 1-14
K.M.A. HASSANEIN; A.Z. MAHMOUD; MANAL M. SAYED
Volume 55, Issue 123, October 2009, Pages 1-9
MANAL M. SAYED; DOHA Y. AHMED