http://www.ips-journal.eu/topics/european-union/article/show/no-more-penny-pinching-2076/
https://www.kingsfund.org.uk/publications/spending-and-availability-health-care-resources
http://www.imf.org/external/np/seminars/eng/2015/secularstag/pdf/Venkateswaran.pdf
https://www.strategie.gouv.fr/sites/strategie.gouv.fr/files/atoms/files/fs-2019-na74-reduire-depenses-publiques-gouardo-lenglart-janvier.pdf