SARRIÓN, Joaquín. Constitutional limits to European integration in the New Member States after the biggest enlargement. Economics and Business Review, Poland, v. 14, n. 3, p. 58–72, 2014. DOI: 10.18559/ebr.2014.3.832. Disponível em: https://journals.ue.poznan.pl/ebr/article/view/832. Acesso em: 3 apr. 2025.