@unpublished{publication-5254,
	author={Frey, Bruno S and Steiner, Lasse},
	institution={University of Zurich},
	issn={1424-0459},
	number={No. 484},
	series={Working paper series / Institute for Empirical Research in Economics},
	title={World Heritage List: Does it make sense?},
	year=2010,
}