@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://hw.oeaw.ac.at/0xc1aa500d_0x0010403b},
journal = {Vienna Yearbook of Population Research},
volume = {2005},
pages = {109--141},
}