Frank Schimmelfennig: The EU, NATO and the Integration of Europe: Rules and Rhetoric. Czech Journal of International Relations, Prague, Czech Republic, v. 40, n. 2, p. 106–110, 2005. DOI: 10.32422/cjir.663. Disponível em: https://ojs3.iir.cz/index.php/cjir/article/view/663. Acesso em: 1 aug. 2026.