From "Morality" Policy to "Normal" Policy: Framing Drug Consumption and Gambling in Germany and the Netherlands and
their Regulatory Consequences. Journal of European Public Policy, 20 (3): 372-389. (in cooperation with S. Heichel, K. Nebel and A. Raschzok)
Environmental Policy: Review on Leader and Laggard Countries in Europe. In Klaus Jakob et al. (eds), Environment and the Single Market. Final Report to the European Commission Brüssel. Berlin: FFU -
Forschungsstelle für Umweltpolitik der Freien Universität zu Berlin, 23-45. (in cooperation with A. Müller und T. Sommerer)
The religious-secular party cleavage in Germany under revision. (R+R)
Regulating Islamic religious education in Germany: causes and consequences. (R+R)
Regulating prostitution and same-sex partnership rights around the globe.
Book manuscript: Religion and party politics in Continental Europe.
Gender quotas in the election of the European Parliament: effects and consequences. (with E. Frech)
Work in progress
Explaining the adoption of sexual policy innovations around the globe. (with C. Knill, C. Person)
The role of religious communities in the implementation of morality policies in Germany. (with I. Ciornei)
Engagement or avoidance? Wedge issue competition on morality policies in the “religious world”.
Consequences of the legalization of prostitution: stimulating flows of human trafficking?
Responsibilization strategies in the governance of prostitution policy (Special Issue with Nicolle Zeegers).
Responsibilization by criminal, administrative and facultative liability: a cross-country comparison of prostitution law