Volume 41, Issue 2, April 2018, Pages 119-132
E. A. El Shenawy; Medhat Elkelawy; Hagar Alm-Eldin Bastawissi; Mahmoud. M. Shams
Volume 32, Issue 4, October 2009, Pages 489-498
A. K Abd El-Samed; H. M Gad; S. E Habik; T. M. Farag