@unpublished{publication-5340,
	author={Epper, Thomas and Fehr-Duda, Helga and Bruhin, Adrian},
	institution={University of Zurich},
	issn={1424-0459},
	number={No. 412},
	series={Working paper series / Institute for Empirical Research in Economics},
	title={Uncertainty Breeds Decreasing Impatience: The Role of Risk Preferences in Time Discounting},
	year=2009,
}