@unpublished{publication-5623,
	author={Stutzer, Alois and Frey, Bruno S},
	institution={University of Zurich},
	issn={1424-0459},
	number={No. 143},
	series={Working paper series / Institute for Empirical Research in Economics},
	title={Does Marriage Make People Happy, Or Do Happy People Get Married},
	year=2004,
}