https://think.ing.com/articles/four-scenarios-for-eurozone-reform-at-this-weeks-eu-summit/
https://www.ifs.org.uk/uploads/publications/bns/BN243.pdf
http://ec.europa.eu/finance/docs/law/171011-communication-banking-union_en.pdf
https://www.cbo.gov/system/files/115th-congress-2017-2018/reports/53651-outlook.pdf