HUMENYUK, Vadym. On the effectiveness of international intergovernmental organizations: The UN system in opposing the COVID-19 pandemic. Actual problems of law, [S. l.], n. 2, p. 52–56, 2023. DOI: 10.35774/app2023.02.052. Disponível em: https://appj.wunu.edu.ua/index.php/apl/article/view/1597. Acesso em: 14 jul. 2025.