@article{agraphguidedmultiroundretrievalmethod,
  title = {A Graph-guided Multi-round Retrieval Method for Conversational Open-domain Question Answering},
  author = {Yongqi Li and Wenjie Li and Liqiang Nie},
  year = {2021},
  eprint = {2104.08443},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2104.08443v1},
}