Volume 34, Issue 1, March 2018, Pages 374-391
Ashraf A Abd El Tawab; Ahmed A Ammar; Heba A Ahmed; Ahmed A Hefny
Volume 28, Issue 1, March 2015, Pages 17-26
Ashraf A. Abd El-Tawab; Fatma I. El Hofy; Ahmed M. Ammar; Heba A. Ahmed; Ahmed A. Hefny