@inproceedings{sogaard-wu-2009-empirical,
    title = "Empirical lower bounds on translation unit error rate for the full class of inversion transduction grammars",
    author = "S{\o}gaard, Anders  and
      Wu, Dekai",
    editor = "Bunt, Harry  and
      Villemonte de la Clergerie, {\'E}ric",
    booktitle = "Proceedings of the 11th International Conference on Parsing Technologies ({IWPT}{'}09)",
    month = oct,
    year = "2009",
    address = "Paris, France",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/W09-3805/",
    pages = "33--36"
}