@unpublished{publication-5165,
	author={Lalive, Rafael and Schmutzler, Armin},
	institution={University of Zurich},
	issn={1664-7041},
	number={No. 23},
	series={Working paper series / Department of Economics},
	title={Auctions vs Negotiations in Public Procurement: Which Works Better?},
	year=2011,
}