@inproceedings{sogaard-2009-verifying,
    title = "Verifying context-sensitive treebanks and heuristic parses in polynomial time",
    author = "S{\o}gaard, Anders",
    editor = "Jokinen, Kristiina  and
      Bick, Eckhard",
    booktitle = "Proceedings of the 17th Nordic Conference of Computational Linguistics ({NODALIDA} 2009)",
    month = may,
    year = "2009",
    address = "Odense, Denmark",
    publisher = "Northern European Association for Language Technology (NEALT)",
    url = "https://preview.aclanthology.org/jlcl-multiple-ingestion/W09-4627/",
    pages = "190--197"
}