Sustainability Assessment Methods In Oil Shale Mine Closure. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference, [S. l.], v. 1, p. 271–275, 2015. DOI: 10.17770/etr2011vol1.918. Disponível em: https://archive-journals.rtu.lv/etr/article/view/3741.. Acesso em: 11 mar. 2026.