https://what-europe-does-for-me.eu/data/pdf/focus/focus03_en.pdf
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/994125/FINAL_TIGRR_REPORT__1_.pdf
https://verfassungsblog.de/too-little-too-late/
https://www.lobbycontrol.de/lobbyregister/bundestag-beschliesst-verbessertes-lobbyregister-112080/