@unpublished{publication-8217,
	author={Bartling, Bj{\"o}rn and Engl, Florian and Weber, Roberto A},
	institution={University of Zurich},
	issn={1664-7041},
	number=125,
	pages=40,
	series={Working paper series / Department of Economics},
	title={Does willful ignorance deflect punishment? – An experimental study},
	year=2013,
}