@article{retrievalsumaretrievalenhancedframework,
  title = {RetrievalSum: A Retrieval Enhanced Framework for Abstractive Summarization},
  author = {Chenxin An and Ming Zhong and Zhichao Geng and Jianqiang Yang and Xipeng Qiu},
  year = {2021},
  eprint = {2109.07943},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2109.07943v2},
}