https://www.publications.parliament.uk/pa/cm201617/cmselect/cmbeis/909/909.pdf
https://ukandeu.ac.uk/wp-content/uploads/2022/10/UKICE-Northern-Ireland-Protocol-Bill.pdf
https://www.bertelsmann-stiftung.de/de/themen/aktuelle-meldungen/2019/maerz/brexit-kostet-deutschland-bis-zu-zehn-milliarden-euro-jaehrlich/
https://www.socialeurope.eu/2017/06/britains-deepening-confusion/