Volume 39, Issue 2, April 2016, Pages 107-118
Mahmoud M. Elkholy
Volume 34, Issue 3, July 2011, Pages 267-273
G. A. Morsy; R. A. Amer; H. A. Yassin
Volume 33, Issue 1, January 2010, Pages 15-20
T. Fetouh; M. A. Abido; A. A. Abou El-Ela