@techreport{Lesthaeghe2006,
author = {Lesthaeghe, R. and Neidert, L. and Surkyn, J.},
title= {Household formation and the ‘Second demographic transition’ in Europe and the U.S. Insights from middle range models},
year = {2006},
URL = {http://sdt.psc.isr.umich.edu/pubs/online/rl_romantic_unions_paper.pdf},
}