Volume 23, Issue 2, July 2009, Pages 133-138
E.A. Osman; M.I. Abd El Razzik; A.M. Serag
Volume 23, Issue 2, July 2009, Pages 145-155
A.A.A. Sharaf El-Den; S.A.S. El-Maasarawy; A.G.A. Saad; E.A. Osman