https://www.frbsf.org/wp-content/uploads/wp2020-17.pdf
https://scholar.harvard.edu/files/aghion/files/social_origins_of_inventors.pdf
https://chemscore.chemsec.org/reports/
http://documents.worldbank.org/curated/en/493201582052636710/pdf/Elite-Capture-of-Foreign-Aid-Evidence-from-Offshore-Bank-Accounts.pdf