@techreport{Lesthaeghe2007,
author = {Lesthaeghe, R. and Neidert, L. and Surkyn, J.},
title= {Household formation and the “second demographic transition” in Europe and the US: Insights from middle range models},
year = {2007},
URL = {http://sdt.psc.isr.umich.edu/pubs/online/rl_romantic_unions_paper.pdf},
}