Elevelt, Anne, Peter Lugtig, and Vera Toepoel. “Doing a Time Use Survey on Smartphones Only: What Factors Predict Nonresponse at Different Stages of the Survey Process?”. Survey Research Methods 13, no. 2 (April 11, 2019): 195–213. Accessed November 27, 2022. https://ojs.ub.uni-konstanz.de/srm/article/view/7385.