El-Sofany, Hosam F., and Samir Abou El-Seoud. “Performance Analysis of an Effective Approach to Protect Cloud Systems Against Application Layer Based Attacks”. International Journal of Online and Biomedical Engineering (iJOE) 15, no. 03 (February 14, 2019): pp. 82–95. Accessed May 24, 2022. https://online-journals.org/index.php/i-joe/article/view/9931.