http://www.cadtm.org/IMG/pdf/Alexander_Sack_DETTE_ODIEUSE.pdf
https://www.riksbank.se/en-gb/press-and-published/notices-and-press-releases/debate-articles/payments-in-the-future-and-legal-protection-for-the-swedish-krona/
https://www.healthaffairs.org/content/forefront/outlook-us-health-spending-growth-blast-past
https://theconversation.com/bulgaria-is-joining-the-euro-in-january-and-not-everyone-is-pleased-258626