https://www.sciencedirect.com/science/article/pii/S0022199617301411
https://www.propublica.org/article/how-private-nonprofits-ultrawealthy-tax-deductions-museums-foundation-art
https://www.politico.eu/article/christine-lagarde-profile-european-central-bank/
https://static1.squarespace.com/static/5ef4d1da53822a571493ebd0/t/5ffcfaea93e2771243fce2ff/1610414842497/A-Wealth-Tax-For-The-UK.pdf