https://institutdelors.eu/wp-content/uploads/2022/04/PB_220420_What-the-EU-budget-can-and-cannot-do-in-response-to-the-war-in-Ukraine_Rubio_EN.pdf
https://www.socialeurope.eu/2017/06/eurozones-hidden-strength/
http://www.bankofengland.co.uk/publications/Documents/speeches/2017/speech1001.pdf