@inproceedings{marcus-etal-1983-theory,
    title = "{D}-Theory: Talking about Talking about Trees",
    author = "Marcus, Mitchell P.  and
      Hindle, Donald  and
      Fleck, Margaret M.",
    booktitle = "21st Annual Meeting of the Association for Computational Linguistics",
    month = jun,
    year = "1983",
    address = "Cambridge, Massachusetts, USA",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/P83-1020/",
    doi = "10.3115/981311.981337",
    pages = "129--136"
}