
https://www.nber.org/system/files/working_papers/w28598/w28598.pdf

http://www.fiscalcouncil.ie/wp-content/uploads/2017/06/Fiscal-Assessment-Report-June-2017-Final.pdf

https://www.bruegel.org/2021/04/setting-europes-economic-recovery-in-motion-a-first-look-at-national-plans/