@techreport{Doblhammer1999,
author = {Doblhammer, G. and Rodgers, J.L. and Rau, R.},
title= {Seasonality of birth in nineteenth and twentieth century Austria: Steps toward a unified theory of human reproductive seasonality},
year = {1999},
publisher = {Max Planck Institute for Demographic Research},
address = {Rostock},
number = {MPIDR Working Paper WP-1999-013},
}