م.د. لؤي سعد عبيد. The relationship between the center and the regions in the German federal system: the international and political journal . The International and Political Journal, [S. l.], v. 61, p. 295–316, 2025. Disponível em: https://ipj.uomustansiriyah.edu.iq/index.php/political/article/view/395. Acesso em: 19 apr. 2025.