@inproceedings{huang-etal-2013-factored,
    title = "Factored Soft Source Syntactic Constraints for Hierarchical Machine Translation",
    author = "Huang, Zhongqiang  and
      Devlin, Jacob  and
      Zbib, Rabih",
    editor = "Yarowsky, David  and
      Baldwin, Timothy  and
      Korhonen, Anna  and
      Livescu, Karen  and
      Bethard, Steven",
    booktitle = "Proceedings of the 2013 Conference on Empirical Methods in Natural Language Processing",
    month = oct,
    year = "2013",
    address = "Seattle, Washington, USA",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/D13-1053/",
    pages = "556--566"
}