@inproceedings{ninomiya-etal-2002-lenient,
    title = "Lenient Default Unification for Robust Processing within Unification Based Grammar Formalisms",
    author = "Ninomiya, Takashi  and
      Miyao, Yusuke  and
      Tsujii, Jun-Ichi",
    booktitle = "{COLING} 2002: The 19th International Conference on Computational Linguistics",
    year = "2002",
    url = "https://preview.aclanthology.org/iwcs-25-ingestion/C02-1100/"
}