ACURIO RIVERA, A. P.; MONTERO CALDERÓN, C. del R. Analysis of environmental risk factors at El Tablón tailings dams, canton Portovelo, province of El Oro. FIGEMPA: Investigación y Desarrollo, Quito, EC, v. 10, n. 2, p. 72–82, 2020. DOI: 10.29166/revfig.v1i2.2574. Disponível em: https://revistadigital.uce.edu.ec/index.php/RevFIG/article/view/2574. Acesso em: 19 feb. 2026.