@techreport{Kreyenfeld2010,
author = {Kreyenfeld, M. and Hornung, A. and Kubisch, K. and Jaschinski, I.},
title= {Fertility and union histories from German GGS data: Some critical reflections.},
year = {2010},
URL = {http://www.demogr.mpg.de/papers/working/wp-2010-023.pdf},
publisher = {Max Planck Institute for Demographic Research},
address = {Rostock},
number = {MPIDR Working Paper; WP 2010-023},
}