https://www.eca.europa.eu/Lists/ECADocuments/SR22_17/SR_External_consultants_EN.pdf
https://www.congress.gov/bill/119th-congress/house-bill/1/text
https://www.socialeurope.eu/the-german-debt-brake-reform-urgent
https://www.prospectmagazine.co.uk/wp-content/uploads/2017/12/Tooze_feature_app_1.pdf