COMPARATIVE ANALYSIS OF DRM SYSTEMS IN GERMANY, USA, RUSSIA AND CHINA. Security Dialogues, [S. l.], v. 14, n. 2, p. 65–88, 2023. DOI: 10.47054/SD23142065c. Disponível em: https://journals.ukim.mk/index.php/sd/article/view/2090. Acesso em: 22 aug. 2025.