@article{coppock_etal_2017,
  author = {Coppock, Alexander and Alan S. Gerber and Donald P. Green and Holger L. Kern},
  title = {{Combining Double Sampling and Bounds to Address Nonignorable Missing Outcomes in Randomized Experiments}},
  journal = {Political Analysis},
  year = {2017},
  volume = {25},
  number = {2},
  pages = {188--206},
  doi = {10.1017/pan.2016.6}
}