http://www.bankofengland.co.uk/publications/Documents/inflationreport/2017/aug.pdf
https://www.brookings.edu/articles/house-republicans-want-to-cut-the-irs-budget-again/
https://www.socialeurope.eu/progressive-taxation-for-a-renewed-social-contract
https://www.raadvanstate.nl/publicaties/publicaties.html