Comparing principal stratification and selection models in parametric causal inference with nonignorable missingness

@article{Mealli2008ComparingPS,
  title={Comparing principal stratification and selection models in parametric causal inference with nonignorable missingness},
  author={Fabrizia Mealli and Barbara Pacini},
  journal={Comput. Stat. Data Anal.},
  year={2008},
  volume={53},
  pages={507-516}
}

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