https://www.hesa.ac.uk/data-and-analysis/publications/finances-2015-16/introduction
https://files.taxfoundation.org/20221013150933/International-Tax-Competitiveness-Index-2022.pdf
https://cepr.org/sites/default/files/policy_insights/PolicyInsight91.pdf
https://www.socialeurope.eu/2017/05/rethinking-german-economic-policy/