ŁUKASZEWSKI, Marcin. Evolution of the constitutional position of selected German-speaking countries’ heads of state in the 20th/21st century. Przegląd Politologiczny, [S. l.], n. 3, p. 77–93, 2014. DOI: 10.14746/pp.2014.19.3.6. Disponível em: https://pressto.amu.edu.pl/index.php/pp/article/view/2914. Acesso em: 6 maj. 2024.