https://www.acams.org/en/media/document/russia-sanctions-evasion-key-methods-and-techniques-part-1
https://multinationales.org/IMG/pdf/pfuesousinfluence.pdf
https://www.imf.org/-/media/Files/Publications/Fandd/Article/2022/September/Prasad-New-Era-Money.ashx
https://lawliberty.org/why-we-should-care-that-tariffs-are-taxes/