Caliendo, M., R. Hujer und S. L. Thomsen (2005): Identifying Effect Hetreogeneity to Improve the Efficiency of Job Creation Schemes in Germany. IAB Discussion Paper No. 8. Nürn- berg.
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Caliendo, M., Hujer, R., Thomsen, S. L. (2005). Identifying Effect Hetreogeneity to Improve the Efficiency of Job Creation Schemes in Germany. Nürn- berg: IAB Discussion Paper,(8).
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