@techreport{Andersson2009,
author = {Andersson, G. and Kreyenfeld, M. and Mika, T.},
title= {Welfare state context, female earnings and childbearing},
year = {2009},
publisher = {Max Planck Institute for Demographic Research},
address = {Rostock},
number = {MPDIR working paper; WP-2009-026},
}