@inproceedings{druck-etal-2009-semi,
    title = "Semi-supervised Learning of Dependency Parsers using Generalized Expectation Criteria",
    author = "Druck, Gregory  and
      Mann, Gideon  and
      McCallum, Andrew",
    editor = "Su, Keh-Yih  and
      Su, Jian  and
      Wiebe, Janyce  and
      Li, Haizhou",
    booktitle = "Proceedings of the Joint Conference of the 47th Annual Meeting of the {ACL} and the 4th International Joint Conference on Natural Language Processing of the {AFNLP}",
    month = aug,
    year = "2009",
    address = "Suntec, Singapore",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/P09-1041/",
    pages = "360--368"
}