https://bdi.eu/media/user_upload/20171005_Pressemitteilung_Brexit.pdf
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/680366/Technical_Note_-_International_Agreements_in_the_Implementation_Period_-_CLEAN.pdf
http://blogs.lse.ac.uk/politicsandpolicy/john-mills-ge2017/
https://www.socialeurope.eu/trump-and-brexit