@inproceedings{madnani-etal-2008-multiple,
    title = "Are Multiple Reference Translations Necessary? Investigating the Value of Paraphrased Reference Translations in Parameter Optimization",
    author = "Madnani, Nitin  and
      Resnik, Philip  and
      Dorr, Bonnie J.  and
      Schwartz, Richard",
    booktitle = "Proceedings of the 8th Conference of the Association for Machine Translation in the Americas: Research Papers",
    month = oct # " 21-25",
    year = "2008",
    address = "Waikiki, USA",
    publisher = "Association for Machine Translation in the Americas",
    url = "https://preview.aclanthology.org/fix-sig-urls/2008.amta-papers.13/",
    pages = "143--152"
}