https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/648148/September_-_Joint_technical_note_on_the_comparison_of_EU-UK_positions_on_citizens__rights.pdf
https://www.bertelsmann-stiftung.de/de/themen/aktuelle-meldungen/2019/maerz/brexit-kostet-deutschland-bis-zu-zehn-milliarden-euro-jaehrlich/
http://www.irishnews.com/news/republicofirelandnews/2017/07/03/news/british-withdrawal-from-fishing-arrangement-unwelcome-and-unhelpful-says-irish-government-1073320/