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Are incentive effects on response rates and nonresponse bias in large-scale, face-to-face surveys generalizable to Germany? Evidence from ten experiments [journal article]
Source: Public Opinion Quarterly, 79 (2015) 3. p.740-768
Fieldwork Monitoring in Practice: Insights from 17 Large-scale Social Science Surveys in Germany [journal article]
Source: Survey Methods: Insights from the Field, (2020). p.1-13
Using Geospatial Data to Monitor and Optimize Face-to-Face Fieldwork [journal article]
Source: Survey Methods: Insights from the Field, (2020). p.1-16