@inproceedings{DBLP:conf/epia/OliveiraCA13,
  author    = {Nuno Oliveira and
               Paulo Cortez and
               Nelson Areal},
  title     = {On the Predictability of Stock Market Behavior Using StockTwits
               Sentiment and Posting Volume},
  booktitle = {EPIA},
  year      = {2013},
  pages     = {355-365},
  ee        = {http://dx.doi.org/10.1007/978-3-642-40669-0_31},
  crossref  = {DBLP:conf/epia/2013},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}
@proceedings{DBLP:conf/epia/2013,
  editor    = {Lu\'{\i}s Correia and
               Lu\'{\i}s Paulo Reis and
               Jos{\'e} Cascalho},
  title     = {Progress in Artificial Intelligence - 16th Portuguese Conference
               on Artificial Intelligence, EPIA 2013, Angra do Hero\'{\i}smo,
               Azores, Portugal, September 9-12, 2013. Proceedings},
  booktitle = {EPIA},
  publisher = {Springer},
  series    = {Lecture Notes in Computer Science},
  volume    = {8154},
  year      = {2013},
  isbn      = {978-3-642-40668-3},
  ee        = {http://dx.doi.org/10.1007/978-3-642-40669-0},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}