@inproceedings{koo-etal-2008-simple,
    title = "Simple Semi-supervised Dependency Parsing",
    author = "Koo, Terry  and
      Carreras, Xavier  and
      Collins, Michael",
    editor = "Moore, Johanna D.  and
      Teufel, Simone  and
      Allan, James  and
      Furui, Sadaoki",
    booktitle = "Proceedings of ACL-08: HLT",
    month = jun,
    year = "2008",
    address = "Columbus, Ohio",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/ingest_wac_2008/P08-1068/",
    pages = "595--603"
}