
https://www.waz.de/politik/gabriel-brexit-vertrag-als-modell-fuer-eu-tuerkei-beziehung-id212938393.html

http://www.msn.com/en-gb/news/uknews/ftse-100-chiefs%e2%80%99-fury-at-no-10-letter-backing-ministers-on-brexit/ar-AArpKuh

https://www.nao.org.uk/wp-content/uploads/2018/01/Implementing-the-UKs-exit-from-the-European-Union-the-Deparment-for-International-Trade.pdf