Sastry, Narayan, Katherine McGonagle, and Paula Fomby. “Effects of the COVID-19 Crisis on Survey Fieldwork: Experience and Lessons From Two Major Supplements to the U.S. Panel Study of Income Dynamics”. Survey Research Methods 14, no. 2 (June 2, 2020): 241–245. Accessed July 13, 2024. https://ojs.ub.uni-konstanz.de/srm/article/view/7752.