ZIERHOFER, W. Geographie der Hybriden. ERDKUNDE, [S. l.], v. 53, n. 1, p. 1–13, 1999. DOI: 10.3112/erdkunde.1999.01.01. Disponível em: https://journals-test.ulb.uni-bonn.de/index.php/erdkunde/article/view/2391. Acesso em: 8 apr. 2025.