http://library.fes.de/pdf-files/bueros/rom/16042.pdf
https://www.rtbf.be/info/monde/detail_la-taxe-tobin-doit-faire-partie-de-reformes-economiques-plus-larges-pour-charles-michel?id=9694965
https://ec.europa.eu/info/sites/info/files/economy-finance/ip127_en.pdf
https://www.ips-journal.eu/topics/economy-and-ecology/one-currency-to-rule-them-all-6933/