
https://www.pwc.com/co/es/publicaciones/assets/world-in-2050-final-report-february-2015-colombia.pdf

https://www.aljazeera.com/news/2025/5/1/what-is-in-the-us-ukraine-minerals-deal

https://reliefweb.int/attachments/66a09358-2cf3-448c-846a-d29f9f8f768c/62a9d1494.pdf