https://www.nao.org.uk/wp-content/uploads/2018/01/PFI-and-PF2.pdf
https://www.politico.eu/article/belgium-most-powerful-politician-drugs-problem-bart-de-wever/?utm_source=POLITICO.EU&utm_campaign=e5fae7f519-EMAIL_CAMPAIGN_2022_04_19_04_03&utm_medium=email&utm_term=0_10959edeb5-e5fae7f519-190380769
https://publications.europa.eu/en/publication-detail/-/publication/506ecd7a-d51d-40cc-82f2-c8403ab57150
https://corporateeurope.org/sites/default/files/driving_into_disaster_report_final_0.pdf