FRANZÉN, Bo. Nils Hybel and Bjørn Poulsen: The Danish resources c. 1000-1550. Growth and recession. Leiden, Brill, 2007. Historisk Tidsskrift, [S. l.], v. 108, n. 2, p. 574–580, 2013. DOI: 10.7146/ht.v108i2.56382. Disponível em: https://tidsskrift.dk/historisktidsskrift/article/view/56382. Acesso em: 7 mar. 2026.