@article{Sobotka2005,
author = {Sobotka, T. and Winkler-Dworak, M. and Testa, M.R. and Lutz, W. and Philipov, D. and Engelhardt, H. and Gisser, R.},
title= {Monthly Estimates of the Quantum of Fertility: Towards a Fertility Monitoring System in Austria},
year = {2005},
URL = {http://www.oeaw.at/vid/download/Sobotka_et_al_pp.109-141.pdf},
journal = {Vienna Yearbook of Population Research 2005},
pages = {109--141},
}