@article{bertwithhistoryanswerembeddingfor,
  title = {BERT with History Answer Embedding for Conversational Question Answering},
  author = {Chen Qu and Liu Yang and Minghui Qiu and W. Bruce Croft and Yongfeng Zhang and Mohit Iyyer},
  year = {2019},
  eprint = {1905.05412},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1905.05412v2},
}