Imai, Kosuke, and Marc Ratkovic. 2013. “Estimating Treatment Effect Heterogeneity in Randomized Program Evaluation.”. Annals of Applied Statistics 7 (1): 443-70. Publisher’s Version: Estimating Treatment Effect Heterogeneity in Randomized Program Evaluation.

Imai, Kosuke, and Marc Ratkovic. 2014. “Covariate Balancing Propensity Score.”. Journal of the Royal Statistical Society: Series B 76 (1): 243-63. Publisher’s Version: Covariate Balancing Propensity Score.

Imai, Kosuke, and Marc Ratkovic. 2015. “Robust Estimation of Inverse Propensity Weights for Marginal Structural Models.”. Journal of the American Statistical Association 110 (511): 1013-23. Publisher’s Version: Robust Estimation of Inverse Propensity Weights for Marginal Structural Models.