Voitsikhovkyi, A. V., and O. S. Bakumov. “Armed Aggression of the Russian Federation Against Ukraine As a Threat to the Collective Security System”. Law and Safety 88, no. 1 (March 29, 2023): 134-145. Accessed May 16, 2024. http://pb.univd.edu.ua/index.php/PB/article/view/689.