@inproceedings{zuo-1999-focusing,
    title = "Focusing on focus: a formalization",
    author = "Zuo, Yan",
    editor = "Thompson, Henry S.  and
      Lascarides, Alex",
    booktitle = "Ninth Conference of the {E}uropean Chapter of the Association for Computational Linguistics",
    month = jun,
    year = "1999",
    address = "Bergen, Norway",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/E99-1038/",
    pages = "257--260"
}