Volume 61, Issue 144, January 2015, Pages 166-175
S.M. EL-BERBAWY; S.M. SAYED; E.I. EL-TOUKHY; AMAL A. MEGAHED
Volume 57, Issue 129, April 2011, Pages 1-17
S.M. SAYED; MARIUM F. MANSY; S.M. EL-BERBAWY