@inproceedings{li-etal-2012-update,
    title = "Update Summarization using a Multi-level Hierarchical {D}irichlet Process Model",
    author = "Li, Jiwei  and
      Li, Sujian  and
      Wang, Xun  and
      Tian, Ye  and
      Chang, Baobao",
    editor = "Kay, Martin  and
      Boitet, Christian",
    booktitle = "Proceedings of {COLING} 2012",
    month = dec,
    year = "2012",
    address = "Mumbai, India",
    publisher = "The COLING 2012 Organizing Committee",
    url = "https://preview.aclanthology.org/fix-sig-urls/C12-1098/",
    pages = "1603--1618"
}