@inproceedings{cassell-etal-2001-non,
    title = "Non-Verbal Cues for Discourse Structure",
    author = "Cassell, Justine  and
      Nakano, Yukiko  and
      Bickmore, Timothy W.  and
      Sidner, Candace L.  and
      Rich, Charles",
    booktitle = "Proceedings of the 39th Annual Meeting of the Association for Computational Linguistics",
    month = jul,
    year = "2001",
    address = "Toulouse, France",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/P01-1016/",
    doi = "10.3115/1073012.1073028",
    pages = "114--123"
}