HOARE, R. Effects of habitat on visibility of elephants during aerial census. Pachyderm, [S. l.], v. 29, n. 1, p. 25–28, 2000. DOI: 10.69649/pachyderm.v29i1.1013. Disponível em: https://pachydermjournal.org/index.php/pachyderm/article/view/1013. Acesso em: 29 apr. 2026.