@article(2018-spanish-sentiment-analysis-in-twitter-at-the-tass-workshop,
  author = {Ferran Pla Santamaría and Lluís Felip Hurtado Oliver},
  title = {Spanish sentiment analysis in Twitter at the TASS workshop},
  year = {2018},
  journal = {Language Resources and Evaluation},
  volume = {52},
  pages = {645–672},
  doi = {10.1007/s10579-017-9394-7}
)