
https://wwwqa.goldmansachs.com/insights/pages/gs-research/dual-action-of-capital-markets-transforms-net-zero-cost-curve/the-dual-action-of-capital-markets-transforms-the-net-zero-cost-curve.pdf

https://wiiw.ac.at/digital-tasks-and-ict-capital-methodologies-and-data-dlp-6429.pdf

https://www.sipri.org/media/press-release/2018/global-arms-industry-us-companies-dominate-top-100-russian-arms-industry-moves-second-place