Khaleel, Turkan Ahmed, and Ayhan Ahmed Al-Shumam. “A Study of Graph Theory Applications in IT Security”. Iraqi Journal of Science 61, no. 10 (October 28, 2020): 2705-2714. Accessed December 7, 2021. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/1686.