@techreport{Keim2009,
author = {Keim, S. and Klärner, A. and Bernardi, L.},
title= {Who is relevant? Exploring fertility relevant social networks},
year = {2009},
publisher = {Max Planck Institute for Demographic Research (MPIDR Working Paper; WP 2009-001)},
address = {Rostock},
}