https://www.brookings.edu/research/a-post-american-europe-and-the-future-of-u-s-strategy/
https://euagenda.eu/upload/publications/untitled-124549-ea.pdf
https://www.opendemocracy.net/can-europe-make-it/andreas-rahmatian/eu-as-britain-s-constitutional-stabiliser?utm_source=Daily+Newsletter&utm_campaign=8d26251e8d-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-8d26251e8d-407405485
https://www.instituteforgovernment.org.uk/sites/default/files/publications/5890%20IFG%20-%20Whitehall%20Monitor%202018%20web.pdf
http://www.ipg-journal.de/regionen/europa/artikel/detail/ein-bisschen-mehr-als-freundschaft-2458/
http://blogs.lse.ac.uk/brexit/2018/01/30/svexit-or-huxit-how-another-country-could-follow-the-uk-out-of-the-eu/
http://www.assemblee-nationale.fr/15/propositions/pion0542.asp
https://www.cdu.de/system/tdf/media/dokumente/ergebnis_sondierung_cdu_csu_spd_120118_2.pdf?file=1&type=field_collection_item&id=12434
http://www.ips-journal.eu/storage/topics/european-union/article/show/stars-in-their-eyes-2515/
https://www.iedonline.eu/download/2017/IED-REPORT-Bratislava-2017.pdf