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https://esg.wharton.upenn.edu/zicklin-center/zicklin-bright-index/
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http://documents.worldbank.org/curated/en/493201582052636710/pdf/Elite-Capture-of-Foreign-Aid-Evidence-from-Offshore-Bank-Accounts.pdf
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https://eur-lex.europa.eu/legal-content/IT/TXT/PDF/?uri=CELEX:52019DC0406&from=FR