@inproceedings{nakata-etal-2002-topic,
    title = "Topic Detection Based on Dialogue History",
    author = "Nakata, Takayuki  and
      Ando, Shinichi  and
      Okumura, Akitoshi",
    booktitle = "{COLING} 2002: The 19th International Conference on Computational Linguistics",
    year = "2002",
    url = "https://preview.aclanthology.org/moar-dois/C02-1082/"
}