
https://theconversation.com/cual-es-el-material-mas-usado-del-mundo-y-el-que-menos-se-investiga-213576

https://iea.org.uk/wp-content/uploads/2023/12/Dowd-Free-Banking-Interactive.pdf

http://www.oecd.org/els/soc/Risks-That-Matter-2018-Main-Findings.pdf