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Nicht-reaktive Datenerhebung: Teilnahmeverhalten bei Befragungen mit Paradaten evaluieren [collection article]
Source: Halem, 2007
(Neue Schriften zur Online-Forschung, 1)
Are 'Webographic' or attitudinal questions useful for adjusting estimates from Web surveys using propensity scoring? [journal article]
Source: Survey Research Methods, 1 (2007) 3. p.155-163
Guidelines for developing a robust web survey [journal article]
Source: Advances in Information Technology and Management, 1 (2012) 1. p.20-23