https://www.nao.org.uk/wp-content/uploads/2018/01/PFI-and-PF2.pdf
https://www.brookings.edu/articles/when-and-why-does-congress-create-fiscal-commissions/
https://blogs.lse.ac.uk/europpblog/2022/11/25/reforming-inheritance-tax-systems-four-guiding-principles/
http://www.debtwire.com/pdf/EuropeanNPLFY18!.pdf