Mohorko, Anja/de Leeuw, Edith/Hox, Joop (2013), »Coverage Bias in European Telephone Surveys: Developments of Landline and Mobile Phone Coverage across Countries and over Time«, in: Survey Methods: Insights from the Field, letzter Zugriff am 7.3.2021, https://surveyinsights.org/?p=828
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Mohorko, A. d. L., Edith/Hox, J. (2013). Coverage Bias in European Telephone Surveys: Developments of Landline and Mobile Phone Coverage across Countries and over Time«.
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