@unpublished{publication-5203,
	author={Steinhauer, Andreas and Wuergler, Tobias},
	institution={University of Zurich},
	issn={1424-0459},
	number={No. 521},
	series={Working paper series / Institute for Empirical Research in Economics},
	title={Leverage and Covariance Matrix Estimation in Finite-Sample IV Regressions},
	year=2010,
}