@Book{WASSA2011:2011,
  editor    = {Alexandra Balahur  and  Ester Boldrini  and  Andres Montoyo  and  Patricio Martinez-Barco},
  title     = {Proceedings of the 2nd Workshop on Computational Approaches to Subjectivity and Sentiment Analysis (WASSA 2.011)},
  month     = {June},
  year      = {2011},
  address   = {Portland, Oregon},
  publisher = {Association for Computational Linguistics},
  url       = {http://www.aclweb.org/anthology/W11-17}
}