@inproceedings{anattentionbasedbilstmcrfapproachto,
  title = {An attention-based BiLSTM-CRF approach to document-level chemical named entity recognition},
  author = {Ling Luo and Zhihao Yang and Pei Yang and Yin Zhang and Lei Wang and Hongfei Lin and Jian Wang},
  year = {2019},
  booktitle = {Bioinformatics 2019 4},
  url = {https://doi.org/10.1093/bioinformatics/btx761},
}