
https://www.lobbycontrol.de/2020/07/eng-verdrahtet-wirecards-lobbygeflecht/?pk_source=nl&pk_campaign=20200728

https://corporateeurope.org/en/2020/10/facebook-friends-lobby-consultants

https://www.eca.europa.eu/ECAPublications/RV-2023-04/RV-2023-04_EN.pdf