@unpublished{publication-3641,
	author={Geel, R and Backes-Gellner, Uschi},
	institution={University of Zurich},
	number=49,
	pages=27,
	series={Swiss Leading House "Economics of Education" Working Paper},
	title={Earning while learning: labor market returns to student employment during tertiary education},
	year=2010,
}