@inproceedings{li-etal-2015-using-external,
    title = "Using External Resources and Joint Learning for Bigram Weighting in {ILP}-Based Multi-Document Summarization",
    author = "Li, Chen  and
      Liu, Yang  and
      Zhao, Lin",
    editor = "Mihalcea, Rada  and
      Chai, Joyce  and
      Sarkar, Anoop",
    booktitle = "Proceedings of the 2015 Conference of the North {A}merican Chapter of the Association for Computational Linguistics: Human Language Technologies",
    month = may # "–" # jun,
    year = "2015",
    address = "Denver, Colorado",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/landing_page/N15-1079/",
    doi = "10.3115/v1/N15-1079",
    pages = "778--787"
}