https://www.tasc.ie/download/pdf/ireland_global_finance_and_the_russian_connection.pdf
https://www.occrp.org/en/beneficial-ownership-data-is-critical-in-the-fight-against-corruption/this-luxembourg-businessman-got-europes-corporate-registries-shut-down-but-whose-privacy-was-he-protecting
https://www.nber.org/system/files/working_papers/w30028/w30028.pdf
https://www.bloomberg.com/news/articles/2020-11-28/the-energy-project-trump-can-t-stop-seeks-ways-to-finish-the-job