Schneider, N. F., M. Bujard, C. Wolf, T. Gummer, K. Hank, and F. J. Neyer. “Family Research and Demographic Analysis (FReDA): Evolution, Framework, Objectives, and Design of ‘The German Family Demography Panel Study’”. Comparative Population Studies, vol. 46, June 2021, doi:10.12765/CPoS-2021-06.