https://openeurope.org.uk/today/blog/what-would-a-no-deal-after-the-transition-period-look-like/
https://www.elysee.fr/admin/upload/default/0001/11/8143fbb609fe8fa002cd7a36deccc1a219766cda.pdf
https://www.ft.com/content/ed91e91a-87f2-11e7-8bb1-5ba57d47eff7
https://www.cesifo-group.de/DocDL/ifoDD_18-01_03-09_Ochsner.pdf