@article{Hogerbrugge2009,
author = {Hogerbrugge, M.J.A. and Dykstra, P.A.},
title= {The Family Ties of Unmarried Cohabiting and Married Persons in the Netherlands},
year = {2009},
doi = {10.1111/j.1741-3737.2008.00585.x},
journal = {Journal of Marriage and the Family},
volume = {71},
pages = {135--145},
}