Janiszewski, Marek, Anna Felkner, and Piotr Lewandowski. “A Novel Approach to National-Level Cyber Risk Assessment Based on Vulnerability Management and Threat Intelligence”. Journal of Telecommunications and Information Technology 76, no. 2 (June 30, 2019): 5–14. Accessed April 21, 2026. https://jtit.pl/jtit/article/view/550.