VIGNE, L.; MARTIN, E. Survey of the ivory items for retail sale in Addis Ababa in 2008. Pachyderm, [S. l.], v. 44, p. 65–71, 2008. Disponível em: https://pachydermjournal.org/index.php/pachyderm/article/view/149. Acesso em: 2 may. 2024.