https://www.ecb.europa.eu/stats/accesstofinancesofenterprises/pdf/ecb.safe202005~c4b89a43b9.en.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://library.fes.de/pdf-files/wiso/14700.pdf
https://open.overheid.nl/documenten/ronl-48b77cf7bdf0f91d4ed394ca2a37d2041bc50647/pdf