Belikova, Nina, and Tatiana Ratnikova. “Some Approaches to Estimating Treatment Effects and Empirical Investigation of the Robustness of Estimates to Sampling Design”. Applied Econometrics, vol. 78, no. 2, Feb. 2025, pp. 5-27, https://doi.org/10.22394/1993-7601-2025-78-5-27.