@article{Soons2009,
author = {Soons, Judith P. M. and Kalmijn, Matthijs},
title= {Is Marriage More Than Cohabitation? Well-Being Differences in 30 European Countries},
year = {2009},
doi = {10.1111/j.1741-3737.2009.00660.x},
journal = {Journal of Marriage and Family},
volume = {71},
number = {5},
pages = {1141--1157},
}