@inproceedings{lehnen-etal-2013-hidden,
    title = "(Hidden) Conditional Random Fields Using Intermediate Classes for Statistical Machine Translation",
    author = "Lehnen, Patrick  and
      Jan-Thorsten Peter, Jorn Wiibker  and
      Peitz, Stephan  and
      Ney, Hermann",
    editor = "Way, Andy  and
      Sima{'}an, Khalil  and
      Forcada, Mikel L.",
    booktitle = "Proceedings of Machine Translation Summit XIV: Papers",
    month = sep # " 2-6",
    year = "2013",
    address = "Nice, France",
    url = "https://aclanthology.org/2013.mtsummit-papers.19/"
}