@article{ancestralinstrumentmethodforcausal,
  title = {Ancestral Instrument Method for Causal Inference without Complete Knowledge},
  author = {Debo Cheng and Jiuyong Li and Lin Liu and Jiji Zhang and Thuc Duy Le and Jixue Liu},
  year = {2022},
  eprint = {2201.03810},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2201.03810v2},
}