@inproceedings{freedman-2000-plan,
    title = "Plan-Based Dialogue Management in a Physics Tutor",
    author = "Freedman, Reva",
    booktitle = "Sixth Applied Natural Language Processing Conference",
    month = apr,
    year = "2000",
    address = "Seattle, Washington, USA",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/A00-1008/",
    doi = "10.3115/974147.974155",
    pages = "52--59"
}