F. Peters-Olbrich, Integration of Immigrants in Germany: Economic Relevance, Measurement, and Empirical Findings, vol. Band 16. Münster: TESTINSTANZ: Wissenschaftliche Schriften der Universität Münster, 2020. Accessed: May 07, 2026. [Online]. Available: https://www.uni-muenster.de/EbooksTestInstallation/index.php/series/catalog/book/151