
https://www.ipg-journal.de/interviews/artikel/das-vertrauen-vollstaendig-verloren-2934/

http://www.oecd.org/eco/surveys/Boosting-productivity-and-wellbeing-OECD-economic-survey-Ireland-2018.pdf

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