@InProceedings{guerini-strapparava-stock:2012:ACL2012,
  author    = {Guerini, Marco  and  Strapparava, Carlo  and  Stock, Oliviero},
  title     = {Ecological Evaluation of Persuasive Messages Using Google AdWords},
  booktitle = {Proceedings of the 50th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)},
  month     = {July},
  year      = {2012},
  address   = {Jeju Island, Korea},
  publisher = {Association for Computational Linguistics},
  pages     = {988--996},
  url       = {http://www.aclweb.org/anthology/P12-1104}
}