ALBRECTSEN, Esben. Rex Insularum. the King of Norway and His ’Skattlands’ as a Political System c. 1260 - c. 1450. Ed.: Steinar Imsen. Fagbokforlaget, Bergen, 2014. Historisk Tidsskrift, [S. l.], v. 116, n. 2, 2017. Disponível em: https://tidsskrift.dk/historisktidsskrift/article/view/56859. Acesso em: 6 dec. 2025.