PHAL, S. E. The Necessities for Jumping. Indian Forester, [S. l.], v. 9, n. 5, p. 243–246, DOI: 10.36808/if/1883/v9i5/13622. Disponível em: http://indianforester.co.in/index.php/indianforester/article/view/13622. Acesso em: 6 dec. 2025.