http://english.bdi.eu/#/article/news/robust-economy-no-cause-for-complacency/
https://www.nuffieldtrust.org.uk/news-item/what-can-the-new-government-learn-from-other-countries-attempts-to-reform-pay-in-social-care-0
http://www.levyinstitute.org/pubs/wp_886.pdf
https://www.ccomptes.fr/system/files/2019-07/20190716-rapport-regimes-speciaux-retraite.pdf