@inproceedings{cathcart-etal-2003-model,
    title = "A model of back-channel acknowledgements in spoken dialogue",
    author = "Cathcart, Nicola  and
      Carletta, Jean  and
      Klein, Ewan",
    editor = "Copestake, Ann  and
      Haji{\v{c}}, Jan",
    booktitle = "10th Conference of the {E}uropean Chapter of the Association for Computational Linguistics",
    month = apr,
    year = "2003",
    address = "Budapest, Hungary",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/ingest_wac_2008/E03-1069/"
}