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Ahmet İçduygu and Deniz Sert tell the history of migration from the Balkans to Turkey from the end of the nineteenth century to the present. They relate this history to nation-building, but also to economic conditions and specific Turkish concerns, such as the perceived need for immigration to compensate for a declining population at that time. They also demonstrate that after 1990, ethnic migration decreased and irregular labour migration became more important.
İçduygu, A., & Sert, D. (2015). The Changing Waves of Migration from the Balkans to Turkey: A Historical Account. In IMISCOE Research Series (pp. 85–104). Springer Science and Business Media B.V. https://doi.org/10.1007/978-3-319-13719-3_5