Wira-Alam, Andias, and Oliver Hopt. “Implementing DDI 3: The German Microcensus Case Study”. IASSIST Quarterly 33, no. 1-2 (November 11, 2010): 16. Accessed May 4, 2024. https://iassistquarterly.com/index.php/iassist/article/view/646.