@article{Kulu2009,
author = {Kulu, H. and Boyle, P.J.},
title= {High suburban fertility: Evidence from four Northern European countries},
year = {2009},
doi = {10.4054/DemRes.2009.21.31},
journal = {Demographic Research},
volume = {21},
number = {31},
pages = {915‒943},
}