@inproceedings{xu-etal-2013-gathering,
    title = "Gathering and Generating Paraphrases from {T}witter with Application to Normalization",
    author = "Xu, Wei  and
      Ritter, Alan  and
      Grishman, Ralph",
    editor = "Sharoff, Serge  and
      Zweigenbaum, Pierre  and
      Rapp, Reinhard",
    booktitle = "Proceedings of the Sixth Workshop on Building and Using Comparable Corpora",
    month = aug,
    year = "2013",
    address = "Sofia, Bulgaria",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/W13-2515/",
    pages = "121--128"
}