Volume 61, Issue 145, April 2015, Pages 230-235
A.M. Koriem; M.F. Hussien; N.H. Makar; O.A. Sadek
Volume 60, Issue 142, July 2014, Pages 95-99
A.M. Koriem; S.M. EL BERBAWY; H.A. ABD EL-KADER