@article{qiu-etal-2011-opinion,
    title = "Opinion Word Expansion and Target Extraction through Double Propagation",
    author = "Qiu, Guang  and
      Liu, Bing  and
      Bu, Jiajun  and
      Chen, Chun",
    journal = "Computational Linguistics",
    volume = "37",
    number = "1",
    month = mar,
    year = "2011",
    address = "Cambridge, MA",
    publisher = "MIT Press",
    url = "https://aclanthology.org/J11-1002/",
    doi = "10.1162/coli_a_00034",
    pages = "9--27"
}