@unpublished{publication-5337,
	author={Zweim{\"u}ller, Josef and Winter-Ebmer, Rudolf and Lalive, Rafael and Kuhn, Andreas and Wuellrich, Jean-Philipe and Ruf, Oliver and B{\"u}chi, Simon},
	institution={University of Zurich},
	issn={1424-0459},
	number={No. 410},
	series={Working paper series / Institute for Empirical Research in Economics},
	title={Austrian Social Security Database},
	year=2009,
}