@inproceedings{peng-etal-2015-extended,
    title = "An extended dependency graph for relation extraction in biomedical texts",
    author = "Peng, Yifan  and
      Gupta, Samir  and
      Wu, Cathy H.  and
      Vijay-Shanker, K.",
    editor = "Cohen, Kevin Bretonnel  and
      Demner-Fushman, Dina  and
      Ananiadou, Sophia  and
      Tsujii, Jun-ichi",
    booktitle = "Proceedings of {B}io{NLP} 15",
    month = jul,
    year = "2015",
    address = "Beijing, China",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/sigarab-more-entries-6621/W15-3803/",
    doi = "10.18653/v1/W15-3803",
    pages = "21--30"
}