
https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef19045en.pdf

https://www.courthousenews.com/eu-must-act-quickly-to-catch-up-to-us-warns-report-author/

https://www.ccomptes.fr/system/files/2019-07/20190716-rapport-regimes-speciaux-retraite.pdf