@inproceedings{penas-rodrigo-2011-simple,
    title = "A Simple Measure to Assess Non-response",
    author = "Pe{\~n}as, Anselmo  and
      Rodrigo, Alvaro",
    editor = "Lin, Dekang  and
      Matsumoto, Yuji  and
      Mihalcea, Rada",
    booktitle = "Proceedings of the 49th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies",
    month = jun,
    year = "2011",
    address = "Portland, Oregon, USA",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/ingest-emnlp/P11-1142/",
    pages = "1415--1424"
}