https://www.socialeurope.eu/2017/06/eurozones-hidden-strength/
https://www.boeckler.de/pdf/p_imk_report_139_2018.pdf
https://www.sciencemag.org/news/2021/06/these-ancient-weights-helped-create-europe-s-first-free-market-more-3000-years-ago?utm_campaign=news_daily_2021-06-28&et_rid=682362580&et_cid=3828153
https://www.imf.org/-/media/Files/Publications/PP/2023/English/PPEA2023001.ashx