
https://scholar.harvard.edu/sites/scholar.harvard.edu/files/rogoff/files/long_run_trends_in_long_maturity_rates_revised_version_july_2023.pdf

https://www.brookings.edu/essay/why-are-fossil-fuels-so-hard-to-quit/?utm_campaign=Brookings%20Brief&utm_medium=email&utm_content=89176716&utm_source=hs_email

https://www.iso.org/files/live/sites/isoorg/files/store/en/PUB100470.pdf