@techreport{Sobotka2005,
author = {Sobotka, T. and Lutz, W. and Philipov, D.},
title= {Missing births: Decomposing the declining number of births in Europe into tempo, quantum and age structure effects},
year = {2005},
publisher = {Vienna Institute of Demography},
address = {Vienna},
number = {European Demographic Research Papers, 2},
}