@inproceedings{levow-2006-unsupervised,
    title = "Unsupervised and Semi-supervised Learning of Tone and Pitch Accent",
    author = "Levow, Gina-Anne",
    editor = "Moore, Robert C.  and
      Bilmes, Jeff  and
      Chu-Carroll, Jennifer  and
      Sanderson, Mark",
    booktitle = "Proceedings of the Human Language Technology Conference of the {NAACL}, Main Conference",
    month = jun,
    year = "2006",
    address = "New York City, USA",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/N06-1029/",
    pages = "224--231"
}