"Do political links influence water prices? Determinants of water prices in Germany" (mit M. Hellwig), Utilities Policy, 2021, forthcoming.

"Mehr Transparenz durch das Lobbyingregister?", Wirtschaftsdienst, 2021, 101(2), 121-126.
DOI: https://doi.org/10.1007/s10273-021-2853-1

"What do we know about lobbying in Germany?", Review of Economics, 2020, 71(1), 43-79.
DOI: https://doi.org/10.1515/roe-2019-0035

"Lobbying and the power of multinational firms" (with A. Schmutzler and A. Müller), European Journal of Political Economy, 2014, Vol. 36, 209-227.
DOI: 10.1016/j.ejpoleco.2014.07.010

Market power of airports: A case study for Amsterdam airport Schiphol" (with V. Bilotkach), Competition and Regulation in Network Industries, 2013, Vol. 14(4), 320-337.
DOI: 10.1177/178359171301400401

"The Assessment of Market Power of Hub Airports" (with V. Bilotkach), Transport Policy, 2013, Vol. 29, 29-37.
DOI: 10.1016/j.tranpol.2013.03.004

"Lobbying against environmental regulation vs. lobbying for loopholes" (with A. Schmutzler), European Journal of Political Economy, 2005, Vol. 21(4), 915-931.
DOI: 10.1016/j.ejpoleco.2005.04.003

• Lobbyismus
• Competition policy, digital economics, regulation
• Applied microeconomics
• Law and economics

Frankfurter Allgemeine Zeitung, Süddeutsche Zeitung, Spiegel online, Tagesspiegel, Manager Magazin