https://www.irs.gov/pub/irs-pdf/p5241.pdf
https://www.openmarketsinstitute.org/publications/biden-must-build-on-state-ags-case-against-googles-monopoly-over-online-advertising
https://socialeurope.eu/corporate-tax-avoidance-after-the-double-irish
https://fsi.taxjustice.net/PDF/FSI-Rankings.pdf