@inproceedings{he-etal-1997-referring,
    title = "Referring to Displays in Multimodal Interfaces",
    author = "He, Daqing  and
      Ritchie, Graeme  and
      Lee, John",
    booktitle = "Referring Phenomena in a Multimedia Context and their Computational Treatment",
    year = "1997",
    url = "https://preview.aclanthology.org/fix-sig-urls/W97-1411/"
}