The Discussion of the Future of the European Union in the 21st Century. Czech Journal of International Relations, Prague, Czech Republic, v. 37, n. 1, p. 20–39, 2002. DOI: 10.32422/cjir.1071. Disponível em: https://cjir.suma.software/index.php/cjir/article/view/1071. Acesso em: 12 jan. 2026.