@inproceedings{duan-etal-2009-feature,
    title = "The {F}eature {S}ubspace Method for {SMT} System Combination",
    author = "Duan, Nan  and
      Li, Mu  and
      Xiao, Tong  and
      Zhou, Ming",
    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/fix-sig-urls/D09-1114/",
    pages = "1096--1104"
}