OPSAHL, Erik. Nordic Elites in Transformation, c. 1050-1250, Volume I: Material Resources. Eds.: Bjørn Poulsen, Helle Vogt & Jón Viðar Sigurðsson. Routledge, New York and London, 2019. . Historisk Tidsskrift, [S. l.], v. 123, n. 1, 2023. DOI: 10.7146/ht.v123i1.138942. Disponível em: https://tidsskrift.dk/historisktidsskrift/article/view/138942. Acesso em: 19 jan. 2026.