PrabowoT09'

@article{DBLP:journals/joi/PrabowoT09,
  author    = {Rudy Prabowo and
               Mike Thelwall},
  title     = {Sentiment analysis: A combined approach},
  journal   = {J. Informetrics},
  volume    = {3},
  number    = {2},
  year      = {2009},
  pages     = {143-157},
  ee        = {http://dx.doi.org/10.1016/j.joi.2009.01.003},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}