Al-Ghaili, A. M., M. Othman, Z. Hassan, H. Kasim, and B. N. Jørgensen. “Three-Cascade-Steps Based Image Encryption Scheme (TSIES) for Digital Energy Hub Applications”. International Journal of Advanced Science and Technology, Vol. 28, no. 8s, Oct. 2019, pp. 236 -50, http://sersc.org/journals/index.php/IJAST/article/view/877.