@inproceedings{he-toutanova-2009-joint,
    title = "Joint Optimization for Machine Translation System Combination",
    author = "He, Xiaodong  and
      Toutanova, Kristina",
    editor = "Koehn, Philipp  and
      Mihalcea, Rada",
    booktitle = "Proceedings of the 2009 Conference on Empirical Methods in Natural Language Processing",
    month = aug,
    year = "2009",
    address = "Singapore",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/jlcl-multiple-ingestion/D09-1125/",
    pages = "1202--1211"
}