@inproceedings{matsuzaki-etal-2013-complexity,
    title = "The Complexity of Math Problems {--} Linguistic, or Computational?",
    author = "Matsuzaki, Takuya  and
      Iwane, Hidenao  and
      Anai, Hirokazu  and
      Arai, Noriko",
    editor = "Mitkov, Ruslan  and
      Park, Jong C.",
    booktitle = "Proceedings of the Sixth International Joint Conference on Natural Language Processing",
    month = oct,
    year = "2013",
    address = "Nagoya, Japan",
    publisher = "Asian Federation of Natural Language Processing",
    url = "https://preview.aclanthology.org/fix-sig-urls/I13-1009/",
    pages = "73--81"
}