@inproceedings{liu-etal-2011-unified-discriminative,
    title = "A Unified and Discriminative Soft Syntactic Constraint Model for Hierarchical Phrase-based Translation",
    author = "Liu, Lemao  and
      Zhao, Tiejun  and
      Wang, Chao  and
      Cao, Hailong",
    booktitle = "Proceedings of Machine Translation Summit XIII: Papers",
    month = sep # " 19-23",
    year = "2011",
    address = "Xiamen, China",
    url = "https://preview.aclanthology.org/jlcl-multiple-ingestion/2011.mtsummit-papers.28/"
}