@article{hopretrieverretrievehopsoverwikipediato,
  title = {HopRetriever: Retrieve Hops over Wikipedia to Answer Complex Questions},
  author = {Shaobo Li and Xiaoguang Li and Lifeng Shang and Xin Jiang and Qun Liu and Chengjie Sun and Zhenzhou Ji and Bingquan Liu},
  year = {2020},
  eprint = {2012.15534},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2012.15534v1},
}