Kreyenfeld M, Hornung A, Kubisch K. The German Generations and Gender Survey: Some Critical Reflections on the Validity of Fertility Histories. CPoS [Internet]. 2013 Jan. 10 [cited 2024 Dec. 4];38(1). Available from: https://comparativepopulationstudies.de/index.php/CPoS/article/view/26