VIGNE, L. North Yemen now takes half of all rhino horn. Pachyderm, [S. l.], v. 3, n. 1, p. 16–19, 1984. DOI: 10.69649/pachyderm.v3i1.585. Disponível em: https://pachydermjournal.org/index.php/pachyderm/article/view/585. Acesso em: 25 apr. 2026.