
https://www.investigate-europe.eu/posts/congo-brazzaville-european-oil-companies-petronor-perenco-secret-interests-with-ruling-family

https://en.llri.lt/wp-content/uploads/2018/10/Corporate-taxation-in-the-Baltics.pdf

https://ec.europa.eu/info/sites/info/files/2019-efb-annual-report_en.pdf