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Assessing the use of mode preference as a covariate for the estimation of measurement effects between modes: a sequential mixed mode experiment [journal article]
Source: Methods, data, analyses : a journal for quantitative methods and survey methodology (mda), 10 (2016) 2. p.119-142
Interviewer effects in the European Social Survey [journal article]
Source: Survey Research Methods, 10 (2016) 2. p.103-118