Gummer, Tobias, Claudia Schmiedeberg, Martin Bujard, Pablo Christmann, Karsten Hank, Tanja Kunz, Detlev Lück, and Franz J. Neyer. “The Impact of Covid-19 on Fieldwork Efforts and Planning in Pairfam and FReDA-GGS”. Survey Research Methods 14, no. 2 (June 2, 2020): 223–227. Accessed December 21, 2024. https://ojs.ub.uni-konstanz.de/srm/article/view/7740.