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Going online with a face-to-face household panel: effects of a mixed mode design on item and unit non-response [journal article]
Source: Survey Research Methods, 9 (2015) 1. p.57-70
Revisiting "yes/no" versus "check all that apply": results from a mixed modes experiment [journal article]
Source: Survey Research Methods, 9 (2015) 3. p.189-204