@article{kloumann2011a,
  title={Positivity of the English language},
  author={Isabel Kloumann and Chris Danforth and Kameron D. Harris and Cathy Bliss and Peter Sheridan Dodds},
  journal={PLoS ONE},
  volume={7},
  pages={e29484},
  journalpage={http://www.plosone.org/article/info:doi/10.1371/journal.pone.0029484},
  year={2012},
  citations={64}
}