1. Abadie, A. (2005). Semiparametric difference-in-differences estimators. The Review of Economic Studies, 72(1), 1–19.
2. Azoulay, P., Zivin, J. S. G., & Manso, G. (2011). Incentives and creativity: Evidence from the academic life sciences. RAND Journal of Economics, 42(3), 527–554.
3. Böhmer, S., & von Ins, M. (2009). Different—Not just by label: Research-oriented academic careers in Germany. Research Evaluation, 18(3), 177–184.
4. Carney, J., Smith, W., Parsad, A., Johnston, K., & Millsap, M. (2008). Evaluation of the Faculty Early Career Development (CAREER) Program. Bethesda, MD: Abt Associates Inc.
5. Chen, S., Mu, R., & Ravallion, M. (2008). Are there lasting impacts of aid to poor areas? Evidence for rural China. Policy Research Working Paper 4084, World Bank, Washington, DC.