Koch, A., V. Halbherr, I. Stoop, and J. Kappelhof (2014), Assessing ESS Sample Quality by Using External and Internal Criteria, European Social Survey ERIC.
(xsd:string)
Koch, A., Halbherr, V., Stoop, I., Kappelhof, J. (2014). Assessing ESS Sample Quality by Using External and Internal Criteria. European Social Survey ERIC.
(xsd:string)