@unpublished{publication-16763,
	author={Bruhin, Adrian and Fehr, Ernst and Schunk, Daniel},
	institution={University of Zurich},
	issn={1664-7041},
	number=298,
	series={Working paper series / Department of Economics},
	title={The many faces of human sociality: uncovering the distribution and stability of social preferences},
	year=2018,
}