citation: @article{dataset_es_paper_reviews,
      author = {Keith Norambuena, Brian and Lettura, Exequiel and Villegas, Claudio},
      year = {2019},
      month = {02},
      pages = {191-214},
      title = {Sentiment analysis and opinion mining applied to scientific paper reviews},
      volume = {23},
      journal = {Intelligent Data Analysis},
      doi = {10.3233/IDA-173807}
  }
  