@unpublished{publication-5141,
	author={Baetschmann, Gregori},
	institution={University of Zurich},
	issn={1664-7041},
	number={No. 47},
	pages=32,
	series={Working paper series / Department of Economics},
	title={Heterogeneity in the relationship between happiness and age: evidence from the German socio-economic panel},
	year=2011,
}