SMERTIN, A.R. Iron tools for leather production in the perm pre-Urals (medieval period). Perm Federal Research Centre Journal, [S. l.], n. 3, p. 82–88, 2023. DOI: 10.7242/2658-705X/2023.3.8. Disponível em: https://journal.permsc.ru/index.php/pscj/article/view/2740. Acesso em: 2 may. 2026.