HASSANPOUR, M. Economic assessment model of the silver recycling industry : Economic assessment model . International Journal of Innovation in Engineering, [S. l.], v. 1, n. 3, p. 20–37, 2021. DOI: 10.59615/ijie.1.3.20. Disponível em: https://ijie.ir/index.php/ijie/article/view/25. Acesso em: 20 may. 2024.