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Participation in a mobile app survey to collect expenditure data as part of a large-scale probability household panel: coverage and participation rates and biases

Couper, Mick P; Jäckle, Annette; Burton, Jonathan; Lessof, Carli. (2019). Participation in a mobile app survey to collect expenditure data as part of a large-scale probability household panel: coverage and participation rates and biases. Survey Research Methods. 13(1), 23-44.