@inproceedings{auli-etal-2009-systematic,
    title = "A Systematic Analysis of Translation Model Search Spaces",
    author = "Auli, Michael  and
      Lopez, Adam  and
      Hoang, Hieu  and
      Koehn, Philipp",
    editor = "Callison-Burch, Chris  and
      Koehn, Philipp  and
      Monz, Christof  and
      Schroeder, Josh",
    booktitle = "Proceedings of the Fourth Workshop on Statistical Machine Translation",
    month = mar,
    year = "2009",
    address = "Athens, Greece",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/Author-page-Marten-During-lu/W09-0437/",
    pages = "224--232"
}