@techreport{Kreyenfeld2004, author = {Kreyenfeld, M.}, title= {Fertility decisions in the FRG and GDR: An analysis with data from the German fertility and family survey}, year = {2004}, URL = {http://www.demogr.mpg.de}, publisher = {Max Planck Institute for Demographic Research}, address = {Rostock}, number = {MPIDR Working Paper WP 2004-008}, }