BOKHOUT, B.; NABUURS, M.; DE, J. Vasectomy of older bulls to manage elephant overpopulation in Africa: a proposal. Pachyderm, [S. l.], v. 39, n. 1, p. 97–103, 2005. Disponível em: https://pachydermjournal.org/index.php/pachyderm/article/view/1245. Acesso em: 22 jul. 2024.