@inbook{Billari2009,
author = {Billari, F.C.},
title= {The happiness commonality: Fertility decisions in low-fertility settings},
year = {2009},
editor = {UNECE},
booktitle = {Conference proceedings: How generations and gender shape demographic change: Towards policies based on better knowledge},
address = {Geneva},
publisher = {UNECE},
pages = {7--31},
}