@techreport{Kreyenfeld2011,
author = {Kreyenfeld, M. and Zeman, K. and Burkimsher, M. and Jaschinski, I.},
title= {Fertility data for German-speaking countries: What is the potential? Where are the pitfalls?},
year = {2011},
publisher = {Max Planck Institute for Demographic Research },
address = {Rostock},
number = {MPIDR working paper no. 2011-003},
}