@article{johansson-moschitti-2013-relational,
    title = "Relational Features in Fine-Grained Opinion Analysis",
    author = "Johansson, Richard  and
      Moschitti, Alessandro",
    journal = "Computational Linguistics",
    volume = "39",
    number = "3",
    month = sep,
    year = "2013",
    address = "Cambridge, MA",
    publisher = "MIT Press",
    url = "https://preview.aclanthology.org/fix-sig-urls/J13-3002/",
    doi = "10.1162/COLI_a_00141",
    pages = "473--509"
}