https://www.brookings.edu/wp-content/uploads/2016/07/Full-Report.pdf
https://www.ilo.org/legacy/english/inwork/cb-policy-guide/declarationofPhiladelphia1944.pdf
https://www.elysee.fr/admin/upload/default/0001/11/8143fbb609fe8fa002cd7a36deccc1a219766cda.pdf
https://cps.org.uk/wp-content/uploads/2021/09/210918224828-CPSWELFAREPAPER1.pdf