Empirical likelihood inference for mean functionals with nonignorably missing response data. - Hui Zhao; Pu-Ying Zhao; Nian-Sheng Tang (Comput. Stat. Data Anal., 2013)

A propensity score adjustment method for regression models with nonignorable missing covariates. - Depeng Jiang; Pu-Ying Zhao; Nian-Sheng Tang (Comput. Stat. Data Anal., 2016)

Dimension-reduced semiparametric estimation of distribution functions and quantiles with nonignorable nonresponse. - Lei Wang 118; Pu-Ying Zhao; Jun Shao (Comput. Stat. Data Anal., 2021)

Generalized empirical likelihood for nonsmooth estimating equations with missing data. - Li-E Cui; Pu-Ying Zhao; Niansheng Tang (J. Multivar. Anal., 2022)