HENNIG, R. Grönland in der Erdkunde des Mittelalters. ERDKUNDE, [S. l.], v. 4, n. 1/2, p. 114–116, 1950. DOI: 10.3112/erdkunde.1950.01.15. Disponível em: https://journals-test.ulb.uni-bonn.de/index.php/erdkunde/article/view/960. Acesso em: 4 apr. 2025.