@unpublished{publication-5450,
	author={Schl{\"a}pfer, Felix and Schmitt, Marcel and Roschewitz, Anna},
	institution={University of Zurich},
	number={No. 712},
	series={Working paper series / Socioeconomic Institute},
	title={Competitive politics, simplified heuristics, and preferences for public goods},
	year=2007,
}