@proceedings{ws-2009-naacl,
    title = "Proceedings of the {NAACL} {HLT} 2009 Workshop on Active Learning for Natural Language Processing",
    editor = "Ringger, Eric  and
      Haertel, Robbie  and
      Tomanek, Katrin",
    month = jun,
    year = "2009",
    address = "Boulder, Colorado",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/W09-1900/"
}