Will, Gisela, Regina Becker, and Dominik Weigand. “COVID-19 Lockdown During Field Work: Challenges and Strategies in Continuing the Survey”. Survey Research Methods 14, no. 2 (June 2, 2020): 247–252. Accessed October 13, 2024. https://ojs.ub.uni-konstanz.de/srm/article/view/7753.