http://www.lawyersforbritain.org/eu-deal-financial-liabilities.shtml
http://docs.dpaq.de/10395-0216-euco-conclusions.pdf
https://blogs.lse.ac.uk/brexit/2019/04/15/brexit-lessons-from-the-silesian-backstop-of-1919-25/
https://www.irishtimes.com/business/technology/ecj-says-eu-rules-on-data-transfers-to-us-valid-in-max-schrems-case-1.4120208