https://www.lobbycontrol.de/2020/09/lobbyregister-entwurf-im-internationalen-vergleich/?pk_campaign=20201008&pk_source=nl
http://www.cbr.cam.ac.uk/fileadmin/user_upload/centre-for-business-research/downloads/special-reports/specialreport-creatingsharedvalue.pdf
https://www.corporatebenchmark.org/sites/default/files/2019-11/CHRB2019KeyFindingsReport.pdf