WIRTH, E. Peter Schöller 1923-1988. ERDKUNDE, [S. l.], v. 42, n. 4, p. 249–261, 1988. DOI: 10.3112/erdkunde.1988.04.01. Disponível em: https://journals-test.ulb.uni-bonn.de/index.php/erdkunde/article/view/2162. Acesso em: 4 dec. 2024.