https://www.alter-eu.org/press-releases/2018/02/20-0
https://www.socialeurope.eu/marrying-labour-flexibility-protection
https://knowledge.wharton.upenn.edu/article/shropshire-athlete-activism/?utm_source=kw_newsletter&utm_medium=email&utm_campaign=2020-09-15
http://www.ladocumentationfrancaise.fr/var/storage/rapports-publics/084000459.pdf