[Ackum, S. (1991), "Youth Unemployment, Labour Market Programs and Subsequent Earnings." Scandinavian Journal of Economics, 93, (4), pp. 531-543.10.2307/3440227]Search in Google Scholar
[Amemiya, T. (1985), Advanced Econometrics. Cambridge, MA: Harvard University Press.]Search in Google Scholar
[Angrist, J., Krueger, A. B. (1999), "Empirical Strategies in Labor Economics," in Ashenfelter, O., Card, D., ed., Handbook of Labor Economics. Amsterdam: North Holland, pp. 1277-1366.10.1016/S1573-4463(99)03004-7]Search in Google Scholar
[Ashenfelter, O. (1978), "Estimating the Effect of Training Programs on Earnings." Review of Economics and Statistics, 6, (1), pp. 47-57.10.2307/1924332]Search in Google Scholar
[Baltagi, B. (1995), Econometric Analysis of Panel Data. New York: Wiley.]Search in Google Scholar
[Barnow, B., Cain, G., Goldberger, A. (1980), "Issues in the Analysis of Selectivity Bias," in Stromsdorfer, E., Farkas, G., ed., Evaluation Studies Vol. 5. Beverly Hills, CA: Sage Publications, pp. 1324-1355.]Search in Google Scholar
[Barron, J., Berger, M., Black, D. (1997), "How Well Do We Measure Training?" Journal of Labour Economics, 15, (3), pp. 507-528.10.1086/209870]Search in Google Scholar
[Becker, S. O., Ichino, A. (2002), "Estimation of Average Treatment Effects Based on Propensity Scores." The Stata Journal, 2, (4), pp. 358-377.10.1177/1536867X0200200403]Search in Google Scholar
[Briggs, D. C. (2004), "Causal Inference and the Heckman Model." Journal of Education and Behavioral Statistics, 29, pp. 397-420.10.3102/10769986029004397]Search in Google Scholar
[Caliendo, M., Hujer, R. (2006), "The Microeconometric Estimation of Treatment Effects. An Overview." Allgemeines Statistisches Archiv, 90, pp. 197-212.10.1007/s10182-006-0230-4]Search in Google Scholar
[Cameron, A. C., Trivedi, P. K. (2005), Microeconometrics: Methods and Applications. Cambridge: Cambridge University Press.10.1017/CBO9780511811241]Search in Google Scholar
[Dehejia, R., Wahba, S. (1999), "Causal Effects in non-experimental Studies: Re-evaluating the Evaluation of Training Programs." Journal of the American Statistical Association, 94, pp. 1053-1062.10.1080/01621459.1999.10473858]Search in Google Scholar
[Dehejia, R., Wahba, S. (2002), "Propensity Score Matching Methods for Nonexperimental Causal Studies." Review of Economics and Statistics, 84, pp. 151-161.10.1162/003465302317331982]Search in Google Scholar
[Fraker, T., Maynard, R. (1987), "The Adequacy of Comparison Group Designs for Evaluations of Employment-related Programs." Journal of Human Resources, 22, (2), pp. 194-227.10.2307/145902]Search in Google Scholar
[Heckman, J. (1979), "Sample Selection Bias as a Specifications Error." Econometrica, 47, (1), pp. 153-161.10.2307/1912352]Search in Google Scholar
[Heckman, J. (1990), "Varieties of Selection Bias." American Economic Review, 80, (2), pp. 313-318.]Search in Google Scholar
[Heckman, J. (1998), "The Economic Evaluation of Social Programs," in Heckman, J., Leamer, E., ed., Handbook of Econometrics Vol. 5. Amsterdam: Elsevier, pp. 1673-1694.]Search in Google Scholar
[Heckman, J., Robb, R. (1986), "Alternative Identifying Assumptions in Econometric Models of Selection Bias," in Rhodes, G., ed., Advances in Econometrics Vol. 5. Greenwich, CT: JAI Press, pp. 1534-1576.]Search in Google Scholar
[Heckman, J. et al. (1996), "Sources of Selection Bias in Evaluating Social Programs: An Interpretation of Conventional Measures and Evidence on the Effectiveness of Matching as a Program Evaluation Method." Proceedings of the National Academy of Sciences USA, 93, (23), pp. 13416-13420.10.1073/pnas.93.23.13416]Search in Google Scholar
[Heckman, J., Ichimura, H., Todd, P. (1997), "Matching as an Econometric Evaluation Estimator: Evidence from Evaluating a Job Training Program." Review of Economic Studies, 64, (4), pp. 605-654.10.2307/2971733]Search in Google Scholar
[Hujer, R., Caliendo, M. (2000), "Evaluation of Active Labour Market Policy: Methodological Concepts and Empirical Estimates. IZA Discussion Paper no. 236.10.2139/ssrn.264805]Search in Google Scholar
[Ichino, A. (2006), The problem of Causality in Microeconometrics. Bologna: EUI.]Search in Google Scholar
[Imbens, G., Angrist, J. (1994), "Identification and Estimation of Local Average Treatment Effects." Econometrica, 62, (4), pp. 467-476.10.2307/2951620]Search in Google Scholar
[Larsson, L. (2003), "Evaluation of Swedish youth Labour Market Programmes." Journal of Human Resources, 38, (4), pp. 891-927.10.3368/jhr.XXXVIII.4.891]Search in Google Scholar
[Lechner, M. (1999), "Earnings and Employment Effects of Continuous Off-the-job Training in East Germany After Unification." Journal of Business and Economic Statistics, 17, pp. 74-90.10.2307/1392240]Search in Google Scholar
[Lee, M. J. (2005), Microeconometrics for Policy, Program and Treatment Effects. Oxford: Oxford University Press.]Search in Google Scholar
[Nannicini, T. (2007), "A Simulation-Based Sensitivity Analysis for Matching Estimators." The Stata Journal, 7, (3), pp. 334-350.10.1177/1536867X0700700303]Search in Google Scholar
[Oakes, M.J., Kaufman, J.S. (2006), Methods in Social Epidemiology. New York: Wiley.]Search in Google Scholar
[Rosenbaum, P. (2010), Observational Studies. New York: Springer.10.1007/978-1-4419-1213-8]Search in Google Scholar
[Rosenbaum, P., Rubin, D. (1983), "The Central Role of Propensity Score in Observational Studies for Causal Effects." Biometrika, 70, (1), pp. 41-55.10.1093/biomet/70.1.41]Search in Google Scholar
[Rosenbaum, P., Rubin, D. (1984), "Reducing Bias in Observational Studies Using Subclassification on the Propensity Score." Journal of the American Statistical Association, 79, pp. 516-524.10.1080/01621459.1984.10478078]Search in Google Scholar
[Rubin, D. (1977), "Assignment to Treatment Group on the Basis of a Covariate." Journal of Educational Statistics, 2, pp. 1-26.10.3102/10769986002001001]Search in Google Scholar
[Vandenberghe, V., Robin, S. (2004), "Evaluating the Effectiveness of Private Education Across Countries: A Comparison of Methods." Labour Economics, 11, pp. 487-506.10.1016/j.labeco.2004.02.007]Search in Google Scholar
[Verbeek, M. (2004), A Guide to Modern Econometrics. Chichester: John Wiley & Sons.]Search in Google Scholar
[Wooldridge, J. M. (2010), Econometric Analysis of Cross-Section and Panel Data.2nd ed. Cambridge, MA: MIT Press.]Search in Google Scholar