Investigating the impact of integration agreements on labor market outcomes for welfare recipients : a randomized controlled trial / Gerard J. van den Berg (University of Groningen, UMCG, IFAU and IZA), Sarah Bernhard (IAB), Gesine Stephan (IAB, FAU and IZA), Arne Uhlendorff (CREST, IAB and IZA) ; IZA Institute of Labor Economics
