@unpublished{publication-7923,
	author={J{\"o}nsson, Stefan and Schmutzler, Armin},
	institution={University of Zurich},
	issn={1664-7041},
	number=108,
	pages=44,
	series={Working paper series / Department of Economics},
	title={All-pay auctions: Implementation and optimality},
	year=2013,
}