@inproceedings{amtrup-1997-layered,
    title = "Layered charts for speech translation",
    author = "Amtrup, Jan W.",
    booktitle = "Proceedings of the 7th Conference on Theoretical and Methodological Issues in Machine Translation of Natural Languages",
    month = jul # " 23-25",
    year = "1997",
    address = "St John{'}s College, Santa Fe",
    publisher = "?? Not mentionned on TOC",
    url = "https://aclanthology.org/1997.tmi-1.23/"
}