@inproceedings{makhoul-1991-spoken,
    title = "Spoken Language Systems",
    author = "Makhoul, John",
    booktitle = "Speech and Natural Language: Proceedings of a Workshop Held at Pacific Grove, California, {F}ebruary 19-22, 1991",
    year = "1991",
    url = "https://preview.aclanthology.org/fix-sig-urls/H91-1081/"
}