@inproceedings{marinho-etal-2019-hierarchical,
    title = "Hierarchical Nested Named Entity Recognition",
    author = "Marinho, Zita  and
      Mendes, Afonso  and
      Miranda, Sebasti{\~a}o  and
      Nogueira, David",
    editor = "Rumshisky, Anna  and
      Roberts, Kirk  and
      Bethard, Steven  and
      Naumann, Tristan",
    booktitle = "Proceedings of the 2nd Clinical Natural Language Processing Workshop",
    month = jun,
    year = "2019",
    address = "Minneapolis, Minnesota, USA",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/jlcl-multiple-ingestion/W19-1904/",
    doi = "10.18653/v1/W19-1904",
    pages = "28--34"
}