https://taxfoundation.org/flat-tax-state-income-tax-reform/
https://www.socialeurope.eu/2017/06/the-case-for-an-investment-state/
https://ecipe.org/wp-content/uploads/2020/07/ECI_20_OccPaper_04_2020_LY05.pdf
https://www.imf.org/en/News/Articles/2020/10/06/sp100620-the-long-ascent-overcoming-the-crisis-and-building-a-more-resilient-economy?utm_medium=email&utm_source=govdelivery