https://www.finance-watch.org/press-release/reaction-european-commission-proposes-approach-to-fiscal-rules-review/
https://scholar.harvard.edu/files/rogoff/files/nber26760_why_is_euro_punching_below_its_weight.pdf
https://theconversation.com/six-graphs-showing-the-state-of-the-uk-economy-a-year-after-brexit-referendum-79598