PETKÓ, Mihály. Changes to the copyright collective management, orphan works. Debreceni Jogi Műhely, [S. l.], v. 10, n. 3, p. 79–88, 2013. DOI: 10.24169/DJM/2013/3/5. Disponível em: https://ojs.lib.unideb.hu/DJM/article/view/5976.. Acesso em: 9 may. 2024.