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The effects of questionnaire completion using mobile devices on data quality: evidence from a probability-based general population panel [journal article]
Source: Methods, data, analyses : a journal for quantitative methods and survey methodology (mda), 9 (2015) 2. p.261-292
Mode system effects in an online panel study: comparing a probability-based online panel with two face-to-face reference surveys [journal article]
Source: Methods, data, analyses : a journal for quantitative methods and survey methodology (mda), 9 (2015) 1. p.3-56