https://www.tni.org/files/publication-downloads/marketforces-report-tni-statewatch.pdf
http://www.votewatch.eu/blog/alliances-matter-political-networks-the-rule-of-law-principles-and-the-split-of-eu-money-mff/
https://www.lobbycontrol.de/2021/06/weitere-kritik-am-wirtschaftsrat-der-cdu/?pk_source=nl&pk_campaign=20210617