Volume 14, Issue 1, May 2016, Pages 285-296
Safaa S. Malek; Sahar A. Abou EL-wafa
Volume 9, Issue 2, October 2011, Pages 1-18
Ola A. M. Basha
Volume 7, Issue 1, May 2009, Pages 460-473
I.G.H. Radwan; E.A. El Kelesh