https://blogs.lse.ac.uk/brexit/2021/05/17/brexit-is-a-political-ponzi-scheme/
https://ec.europa.eu/commission/sites/beta-political/files/joint_table_citizens_rights_-_third_round.pdf
https://www.theguardian.com/politics/2017/sep/04/uk-trade-deals-after-brexit-theresa-may-eu
https://www.cesifo-group.de/DocDL/ifoDD_18-01_03-09_Ochsner.pdf