Chepkov, Ihor B., Valerii V. Zubariev, Oleksandr O. Sverhunov, and Oleksandr V. Zubariev. “Оn the Development of Damage of Information System Operations and Methodological Issues of Assessment of the Efficiency of Information Security Systems”. Environmental safety and natural resources 30, no. 2 (July 3, 2019): 67–90. Accessed August 13, 2025. https://es-journal.in.ua/article/view/172547.