Volume 36, Issue 3, July 2013, Pages 217-223
I. Bedir; Abd El-wahab Hassan; Essam M. Rashad; S. A, Mahmoud
Volume 32, Issue 3, July 2009, Pages 271-278
L Bedir; Abd El-wahab Hassan; M. A. El- khazendar; S. A. Mahrnoud