@unpublished{publication-5069,
	author={Olivares, Maria and Wetzel, Heike},
	institution={University of Zurich},
	number=70,
	pages=32,
	series={Swiss Leading House "Economics of Education" Working Paper},
	title={How to compete in the higher education market? - Empirical evidence for economies of scale and scope of German higher education institutions},
	year=2011,
}