@article{Kulu2009,
author = {Kulu, H. and Boyle, P.J.},
title= {High fertility in city suburbs: Compositional or contextual effects?},
year = {2009},
doi = {10.1007/s10680-008-9163-9},
journal = {European Journal of Population},
volume = {25},
number = {2},
pages = {157--174},
}