@unpublished{publication-9553, author={Ursprung, Heinrich and Zimmermann, Christian and Krapf, Matthias}, doi={10.20955/wp.2014.001}, institution={University of Zurich}, number={2014-1}, series={Federal Reserve Bank of St. Louis}, title={Parenthood and productivity of highly skilled labor: evidence from the groves of academe}, year=2014, }