@techreport{Örsal2010,
author = {Örsal, D.D.K.  and Goldstein, J.R. },
title= {The Increasing Importance of Economic Conditions on Fertility},
year = {2010},
publisher = {Max-Planck-Institute for Demographic Research },
address = {Rostock},
number = {MPIDR Working Paper, WP-2010-014},
}