https://gabriel-zucman.eu/files/TWZ2020b.pdf
https://thehill.com/opinion/finance/571764-enough-with-the-gdp-its-time-to-measure-genuine-progress?utm_source=newsletter&utm_medium=email&utm_campaign=13%2F09%2F21
https://www.linkiesta.it/2020/05/macron-merkel-piano-iniziativa-500-miliardi/
https://www.oecd.org/tax/beps/public-consultation-document-secretariat-proposal-unified-approach-pillar-one.pdf