@article{Billingsley2011,
author = {Billingsley, S.},
title= {Economic crisis and recovery: Changes in second birth rates within occupational classes and educational groups},
year = {2011},
doi = {10.4054/DemRes.2011.24.16},
journal = {Demographic Research},
volume = {24},
number = {16},
pages = {375--406},
}