https://openeurope.org.uk/today/blog/what-would-a-no-deal-after-the-transition-period-look-like/
https://www.rand.org/pubs/research_reports/RR2200.html
https://www.bertelsmann-stiftung.de/de/themen/aktuelle-meldungen/2019/maerz/brexit-kostet-deutschland-bis-zu-zehn-milliarden-euro-jaehrlich/
https://www.piie.com/research/piie-charts/which-countries-are-cptpp-and-rcep-trade-agreements-and-which-want