SINGHAL, R. M. Charcoal Burning in Sweden. Indian Forester, [S. l.], v. 75, n. 9, p. 350–350, 1949. DOI: 10.36808/if/1949/v75i9/23124. Disponível em: http://indianforester.co.in/index.php/indianforester/article/view/23124. Acesso em: 5 dec. 2025.