@inproceedings{zhang-etal-2020-document,
    title = "Document-level Relation Extraction with Dual-tier Heterogeneous Graph",
    author = "Zhang, Zhenyu  and
      Yu, Bowen  and
      Shu, Xiaobo  and
      Liu, Tingwen  and
      Tang, Hengzhu  and
      Yubin, Wang  and
      Guo, Li",
    editor = "Scott, Donia  and
      Bel, Nuria  and
      Zong, Chengqing",
    booktitle = "Proceedings of the 28th International Conference on Computational Linguistics",
    month = dec,
    year = "2020",
    address = "Barcelona, Spain (Online)",
    publisher = "International Committee on Computational Linguistics",
    url = "https://preview.aclanthology.org/Author-page-Marten-During-lu/2020.coling-main.143/",
    doi = "10.18653/v1/2020.coling-main.143",
    pages = "1630--1641"
}