
https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef20003en.pdf

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

https://corporateeurope.org/en/2023/09/businesseurope-death-star-corporate-lobbying