@book{Kleven_2020,<br/><span class="tab"></span> title={Does Biology Drive Child Penalties? Evidence from Biological and Adoptive Families},<br/><span class="tab"></span> url={http://dx.doi.org/10.3386/w27130},<br/><span class="tab"></span> DOI={10.3386/w27130},<br/><span class="tab"></span> institution={National Bureau of Economic Research},<br/><span class="tab"></span> author={Kleven,<br/><span class="tab"></span> Henrik and Landais,<br/><span class="tab"></span> Camille and Søgaard,<br/><span class="tab"></span> Jakob Egholt},<br/><span class="tab"></span> year={2020},<br/><span class="tab"></span> month=may }