Zhu2021Retrieving.md

@article{Zhu2021Retrieving,
  title={Retrieving and Reading A Comprehensive Survey on Open-domain Question Answering},
  author={Zhu, Fengbin and Lei, Wenqiang and Wang, Chao and Zheng, Jianming and Poria, Soujanya and Chua, Tat-Seng},
  journal={arXiv preprint arXiv2101.00774},
  year={2021}
}