
https://www.diw.de/documents/publikationen/73/diw_01.c.578096.de/18-7-3.pdf

https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/680142/Chancellor_to_Governor_February_2018.pdf

https://think.ing.com/articles/four-scenarios-for-eurozone-reform-at-this-weeks-eu-summit/