https://www.socialeurope.eu/2017/07/discourse-need-role-trade-unions/
https://www.lobbycontrol.de/parteienfinanzierung/parteispenden-deutschland-ist-das-intransparenteste-land-in-europa-115718/
https://www.opendemocracy.net/uk/adam-ramsay/so-who-are-dup?utm_source=Daily+Newsletter&utm_campaign=646fb696e5-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-646fb696e5-407405485
https://corporateeurope.org/en/2021/07/business-lobbies-dominate-secret-channel