https://www.suerf.org/docx/f_ec43638b66e16a5bbede9b710b12b0c7_32333_suerf.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://zoe-institut.de/wp-content/uploads/2021/06/ZOE_Report_A-future-fit-recovery_FINAL.pdf
http://www.levyinstitute.org/pubs/wp_886.pdf