SÁNCHEZ, Eutemio. Strategic planning for the improvement of productivity and competitiveness of underground mining in Peru. Gestionar: revista de empresa y gobierno, [S. l.], v. 3, n. 2, p. 50–65, 2023. DOI: 10.35622/j.rg.2023.02.005. Disponível em: https://revistas.inudi.edu.pe/rg/article/view/357. Acesso em: 6 jul. 2026.