@inproceedings{hoang-etal-2009-unified,
    title = "A unified framework for phrase-based, hierarchical, and syntax-based statistical machine translation",
    author = "Hoang, Hieu  and
      Koehn, Philipp  and
      Lopez, Adam",
    booktitle = "Proceedings of the 6th International Workshop on Spoken Language Translation: Papers",
    month = dec # " 1-2",
    year = "2009",
    address = "Tokyo, Japan",
    url = "https://preview.aclanthology.org/jlcl-multiple-ingestion/2009.iwslt-papers.4/",
    pages = "152--159"
}