Volume 29, Issue 1, January 2015, Pages 49-62
E. A.M. Osman; A. A . Swelam; Manal, A .Hassan; Sheren N. Nathan
Volume 27, Issue 1, January 2013, Pages 44-53
E. A.M. Osman; M.H. Abd El-Aal; G. F. EL-Shiekh