McLauchlan, Cynthia, and Matthias Schonlau. “Are Final Comments in Web Survey Panels Associated With Next-Wave Attrition?”. Survey Research Methods 10, no. 3 (December 10, 2016): 211–224. Accessed April 19, 2024. https://ojs.ub.uni-konstanz.de/srm/article/view/6217.