
https://blogs.imf.org/2020/04/15/fiscal-policies-to-contain-the-damage-from-covid-19/?utm_medium=email&utm_source=govdelivery

http://www.europarl.europa.eu/ftu/pdf/en/FTU_5.9.1.pdf

https://www.parliament.uk/documents/commons-committees/culture-media-and-sport/Background%20paper%20-%202016%20Referendum%20Expenses%20Opinion%20-%20Matrix%20Chambers.pdf