@inproceedings{young-rounds-1993-logical,
    title = "A Logical Semantics for Nonmonotonic Sorts",
    author = "Young, Mark A.  and
      Rounds, Bill",
    booktitle = "31st Annual Meeting of the Association for Computational Linguistics",
    month = jun,
    year = "1993",
    address = "Columbus, Ohio, USA",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/P93-1028/",
    doi = "10.3115/981574.981602",
    pages = "209--215"
}