@unpublished{publication-4903,
	author={Frey, Bruno S and Pamini, Paolo and Steiner, Lasse},
	institution={University of Zurich},
	issn={1664-7041 (P) 1664-705X (E)},
	number={No. 01},
	pages=35,
	series={Working paper series / Department of Economics},
	title={What determines the World Heritage List? An econometric analysis},
	year=2011,
}