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

https://www.bruegel.org/sites/default/files/2024-07/Nicolas%20book_online.pdf

https://www.bruegel.org/sites/default/files/2024-02/PB%2002%202024_3.pdf