Pötzsch, Olga. “Cohort Fertility: A Comparison of the Results of the Official Birth Statistics and of the Microcensus Survey 2008”. Comparative Population Studies 35, no. 1 (September 29, 2010). Accessed April 27, 2024. https://comparativepopulationstudies.de/index.php/CPoS/article/view/23.