@inproceedings{bos-etal-2003-dipper,
    title = "{DIPPER}: Description and Formalisation of an Information-State Update Dialogue System Architecture",
    author = "Bos, Johan  and
      Klein, Ewan  and
      Lemon, Oliver  and
      Oka, Tetsushi",
    booktitle = "Proceedings of the Fourth {SIG}dial Workshop of Discourse and Dialogue",
    year = "2003",
    url = "https://preview.aclanthology.org/fix-sig-urls/W03-2123/",
    pages = "115--124"
}