@article{Perelli-Harris2012,
author = {Perelli-Harris, B.  and Sánchez Gassen, N. },
title= {How similar are cohabitation and marriage? Legal approaches to cohabitation across Western Europe},
year = {2012},
doi = {10.1111/j.1728-4457.2012.00511.x},
journal = {Population and Development Review },
volume = {38},
number = {3},
pages = {435--467},
}