https://www.lrb.co.uk/v39/n18/swati-dhingra/how-not-to-do-trade-deals
https://www.elysee.fr/admin/upload/default/0001/11/8143fbb609fe8fa002cd7a36deccc1a219766cda.pdf
https://www.theguardian.com/politics/2017/nov/10/brexit-date-is-not-irreversible-says-man-who-wrote-article-50-lord-kerr
https://www.gov.uk/guidance/status-of-eu-nationals-in-the-uk-what-you-need-to-know