@inproceedings{kwasny-sondheimer-1979-ungrammaticality,
    title = "Ungrammaticality and Extra-Grammaticality in Natural Language Understanding Systems",
    author = "Kwasny, Stan C.  and
      Sondheimer, Norman K.",
    booktitle = "17th Annual Meeting of the Association for Computational Linguistics",
    month = jun,
    year = "1979",
    address = "La Jolla, California, USA",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/landing_page/P79-1006/",
    doi = "10.3115/982163.982170",
    pages = "19--23"
}