@inproceedings{opitz-zirn-2013-bootstrapping,
    title = "Bootstrapping an Unsupervised Approach for Classifying Agreement and Disagreement",
    author = {Opitz, Bernd  and
      Zirn, C{\"a}cilia},
    editor = "Oepen, Stephan  and
      Hagen, Kristin  and
      Johannessen, Janne Bondi",
    booktitle = "Proceedings of the 19th Nordic Conference of Computational Linguistics ({NODALIDA} 2013)",
    month = may,
    year = "2013",
    address = "Oslo, Norway",
    publisher = {Link{\"o}ping University Electronic Press, Sweden},
    url = "https://preview.aclanthology.org/ingest-emnlp/W13-5623/",
    pages = "253--265"
}