@InProceedings{toprak-jakob-gurevych:2010:ACL,
  author    = {Toprak, Cigdem  and  Jakob, Niklas  and  Gurevych, Iryna},
  title     = {Sentence and Expression Level Annotation of Opinions in User-Generated Discourse},
  booktitle = {Proceedings of the 48th Annual Meeting of the Association for Computational Linguistics},
  month     = {July},
  year      = {2010},
  address   = {Uppsala, Sweden},
  publisher = {Association for Computational Linguistics},
  pages     = {575--584},
  url       = {http://www.aclweb.org/anthology/P10-1059}
}