LAUER, W. L’indice xérothermique: (Zur Frage der Klimaindizes). ERDKUNDE, [S. l.], v. 7, n. 1, p. 48–52, 1953. DOI: 10.3112/erdkunde.1953.01.05. Disponível em: https://journals-test.ulb.uni-bonn.de/index.php/erdkunde/article/view/1054. Acesso em: 7 oct. 2024.