System of subjects ensuring national security and defence of Ukraine. Law and Safety, [S. l.], v. 77, n. 2, p. 33–39, 2020. DOI: 10.32631/pb.2020.2.04. Disponível em: https://pb.univd.edu.ua/index.php/PB/article/view/353. Acesso em: 25 sep. 2025.