https://www.socialeurope.eu/2017/07/european-welfare-states-perform/
http://www.etui.org/Publications2/Books/Innovative-union-practices-in-Central-Eastern-Europe
https://www.brookings.edu/wp-content/uploads/2024/03/3_Arslanalp-et-al_unembargoed.pdf
https://www.assemblee-nationale.fr/dyn/16/rapports/cion_fin/l16b1678_rapport-information#