
http://www.ips-journal.eu/regions/europe/article/show/myth-of-the-echo-chamber-2135/

https://blogs.lse.ac.uk/brexit/2019/12/03/a-missed-opportunity-revisiting-the-euro-referendum-that-never-was-from-a-historical-perspective/

https://economiesuisse.ch/de/artikel/der-bericht-der-expertengruppe-bankenstabilitaet-als-wichtige-basis