GUMMER, Tobias; SCHMIEDEBERG, Claudia; BUJARD, Martin; CHRISTMANN, Pablo; HANK, Karsten; KUNZ, Tanja; LÜCK, Detlev; NEYER, Franz J. The impact of Covid-19 on fieldwork efforts and planning in pairfam and FReDA-GGS. Survey Research Methods, [S. l.], v. 14, n. 2, p. 223–227, 2020. DOI: 10.18148/srm/2020.v14i2.7740. Disponível em: https://ojs.ub.uni-konstanz.de/srm/article/view/7740. Acesso em: 20 apr. 2024.