@article{Aarssen2005,
author = {Aarssen, L.W.},
title= {Why is fertility lower in wealthier countries? The role of relaxed fertility-selection},
year = {2005},
doi = {10.1111/j.1728-4457.2005.00054.x},
journal = {Population and Development Review},
volume = {31},
number = {1},
pages = {113--126},
}