https://www.perfandersson.com/uploads/1/2/7/5/127505228/andersson_2022_cp_accepted_version.pdf
https://www.politico.eu/article/christine-lagarde-profile-european-central-bank/
https://taxfoundation.org/flat-tax-state-income-tax-reform/
https://ukandeu.ac.uk/what-sunaks-tax-return-tells-us-about-the-uk-tax-system/