HORN, W. Die Karte von Preussen des Heinrich Zell (1542). ERDKUNDE, [S. l.], v. 4, n. 1/2, p. 67–81, 1950. DOI: 10.3112/erdkunde.1950.01.06. Disponível em: https://journals-test.ulb.uni-bonn.de/index.php/erdkunde/article/view/951. Acesso em: 8 oct. 2024.