@misc{8097,
  author = {Y. Tao and H. Fu},
  title = {Doubly robust estimation of the weighted average treatment effect for a target population},
  year = {2019},
  journal = {Stat Med},
  volume = {38},
  number = {3},
  pages = {315-325},
  issn = {0277-6715},
  doi = {10.1002/sim.7980},
}