@article{Mills2011,
author = {Mills, M. and Rindfuss, R.R. and McDonald, P. and Velde, E.},
title= {Why do people postpone parenthood? Reasons and social policy incentives},
year = {2011},
doi = {10.1093/humupd/dmr026},
volume = {17},
number = {6},
pages = {848--886},
}