Volume 58, Issue 133, April 2012, Pages 1-8
M.A.M. ABDEL-RAHMAN; SOHEIR M. EL-MANYAWE; A.M. KHATEIB; SAHARE SABA
Volume 57, Issue 130, July 2011, Pages 1-10
A.M. KHATEIB; M.A. ABDEL-GAWAD; E.M. FARAG