YALÇIN, Cem. Challenging the future: the democratic deficit of the EU from a federalist perspective. Economics and Business Review, Poland, v. 14, n. 3, p. 23–38, 2014. DOI: 10.18559/ebr.2014.3.830. Disponível em: https://journals.ue.poznan.pl/ebr/article/view/830. Acesso em: 29 may. 2025.