https://www.ilo.org/media/545771/download
https://www.dgb-bestellservice.de/besys_dgb/pdf/DGB15130.pdf
https://www.ccomptes.fr/system/files/2019-07/20190716-rapport-regimes-speciaux-retraite.pdf
https://www.socialeurope.eu/structural-reforms-labour-markets-impair-innovation