PORTO, M. 20 Anos na União Europeia: Os sonhos concretizados e por Concretizar: 20 years in the European Union: The dreams that came true and and the dreams that did not. Perspectivas - Journal of Political Science, [S. l.], v. 2, p. 07–10, 2006. Disponível em: https://www.perspectivasjournal.com/index.php/perspectivas/article/view/424. Acesso em: 5 may. 2024.