@unpublished{publication-16656,
	author={Rupietta, Christian and Meuer, Johannes and Backes-Gellner, Uschi},
	institution={University of Zurich},
	number=145,
	series={Swiss Leading House Economics of Education Working Paper},
	title={How do apprentices moderate the influence of               organizational innovation on the technological               innovation process?},
	year=2018,
}