@inproceedings{makhoul-1990-spoken,
    title = "Spoken Language Systems",
    author = "Makhoul, John",
    booktitle = "Speech and Natural Language: Proceedings of a Workshop Held at Hidden Valley, {P}ennsylvania, June 24-27,1990",
    year = "1990",
    url = "https://preview.aclanthology.org/fix-sig-urls/H90-1080/"
}