
https://www.strategie.gouv.fr/sites/strategie.gouv.fr/files/atoms/files/fs-2019-fiscalite-capital-01-10-2019.pdf

https://www.socialeurope.eu/2017/06/the-case-for-an-investment-state/

https://theconversation.com/bulgaria-is-joining-the-euro-in-january-and-not-everyone-is-pleased-258626