MARTIN, E.; MARTIN, C. Russia’s mammoth ivory industry expands: what effect on elephants?. Pachyderm, [S. l.], v. 47, p. 26–35, 2010. DOI: 10.69649/pachyderm.v47i.208. Disponível em: https://pachydermjournal.org/index.php/pachyderm/article/view/208. Acesso em: 24 apr. 2026.