https://www.cesifo.org/DocDL/cesifo1_wp6586.pdf
https://www.socialeurope.eu/2017/06/the-case-for-an-investment-state/
https://www.brookings.edu/wp-content/uploads/2017/09/4_alganetal.pdf
https://www.lobbycontrol.de/lobbyismus-in-der-eu/katargate-oder-wie-man-den-kopf-aus-der-schlinge-zieht-113018/