https://www.sfo.gov.uk/2018/03/22/sfo-recovers-4-4m-from-corrupt-diplomats-in-chad-oil-share-deal/
https://www.icij.org/investigations/luanda-leaks/pwc-head-shocked-and-disappointed-by-luanda-leak-revelations/?utm_source=ICIJ&utm_campaign=33cf2651d5-0128_WeeklyEmail&utm_medium=email&utm_term=0_992ecfdbb2-33cf2651d5-82447353
https://corporateeurope.org/sites/default/files/driving_into_disaster_report_final_0.pdf
https://papers.ssrn.com/sol3/Delivery.cfm/SSRN_ID4092831_code1752653.pdf?abstractid=4092831&mirid=1