@inproceedings{ninomiya-etal-2002-indexing,
    title = "An Indexing Scheme for Typed Feature Structures",
    author = "Ninomiya, Takashi  and
      Makino, Takaki  and
      Tsujii, Jun-Ichi",
    booktitle = "{COLING} 2002: The 17th International Conference on Computational Linguistics: Project Notes",
    year = "2002",
    url = "https://preview.aclanthology.org/ingest_wac_2008/C02-2024/"
}