Volume 23, Issue 1, June 2016, Pages 26-34
Fathy A. Khalafalla; Fatma H.M. Ali; Jehan M. Ouf; Ahmed M.M.A. Mosa
Volume 20, Issue 1, March 2010, Pages 175-180
Fathy A. Khalafalla; Fatma H. M. Ali; Abdel-Rahim H. A. Hassan