Aziz, Israa, and Ihsan Abdulqadder. “An Overview on SDN and NFV Security Orchestration in Cloud Network Environment”. Cihan University-Erbil Scientific Journal 5, no. 1 (June 20, 2021): 20-27. Accessed December 7, 2021. https://journals.cihanuniversity.edu.iq/index.php/cuesj/article/view/389.