Danzer, Alexander M.; Yaman, Firat - Institut für Arbeitsmarkt- und Berufsforschung (IAB) - 2010
"The paper analyses the impact of regional own-ethnic concentration on the language proficiency of immigrants. It solves the endogeneity of immigrants' location choices by exploiting the fact that guest-workers in Germany after WWII were initially placed by firms and labor agencies. We find a...