https://www.strategie.gouv.fr/publications/metiers-2030-perspectives-de-recrutement-region
https://www.cesifo-group.de/DocDL/ifoDD_18-01_03-09_Ochsner.pdf
https://blogs.lse.ac.uk/europpblog/2021/07/23/same-legal-status-but-unequal-treatment-bureaucratic-discrimination-against-mobile-eu-citizens/
https://www.esri.ie/system/files/publications/JR2.pdf