1. Agência Nacional de Mineração. (2019). Anuário Mineral Brasileiro: principais substâncias metálicas, Instituto Aço Brasil. https://acobrasil.org.br/site/dados-do-setor/
2. AISI – American Iron and Steel Institute. (2021, April 17). Environmental Services. Washing-ton: AISI. https://www.americaniron.com/environmental.html
3. AISI – American Iron and Steel Institute. (2021, April 17). Sustainability in Steel Recycling. https://www.steel.org/wp-content/uploads/2020/09/Steel-Sustains-in-Recyclability-Fact-Sheet.pdf
4. Recycling of Steel
5. Bouding, K. E. (1966). The Economics of Knowledge and the Knowledge of Economics. The American Economic Review, 56 (1), 1-3. https://www.jstor.org/stable/1821262