https://wiiw.ac.at/digital-tasks-and-ict-capital-methodologies-and-data-dlp-6429.pdf
https://www.rbccm.com/assets/rbccm/docs/insights/sustainability-matters-2023.pdf
https://www.propublica.org/article/secret-irs-files-trading-competitors-stock
https://www.fraserinstitute.org/sites/default/files/economic-freedom-of-the-world-2021.pdf