SIDENIUS, Niels Chr.; SVENSSON, Palle. Indledning. Politica, [S. l.], v. 17, n. 1, p. 5, 1985. DOI: 10.7146/politica.v17i1.68697. Disponível em: https://tidsskrift.dk/politica/article/view/68697. Acesso em: 6 dec. 2025.