Volume 40, July-September, August 2019, Pages 347-258
Abd El -Latif A. El-kak; Shehata M. Qassem; Saad Z. Soliman; Yasser W. E. El-Bakry
Volume 39, OCTOBER- DECEMBER, December 2018, Pages 523-536
Mohamed H. Attya; El-Sayed M. El-Sharkawy; Saad Z. Soliman