Volume 60, Issue 142, July 2014, Pages 95-99
A.M. Koriem; S.M. EL BERBAWY; H.A. ABD EL-KADER
Volume 59, Issue 137, April 2013, Pages 72-77
A.M. KORIEM; S. H. AL-HABATY; N.H. MAKAR; H.A. ABD EL-KADER