https://images.transparencycdn.org/images/2022_Report-Full_Exporting-Corruption_EN.pdf
https://www.open-britain.co.uk/new_research_trade_deals_with_five_key_countries_could_take_26_years_to_negotiate
https://www.socialeurope.eu/the-discreet-but-dubious-charm-of-tax-treaties
https://www.wto.org/english/res_e/booksp_e/wtr23_e/wtr23_e.pdf