@revista_internacional{326,
  author = {Rosa María Rodríguez and Luis Martínez and Vicenç c Torra and Z.S Xu and Francisco Herrera},
  title = {Hesitant fuzzy sets: State of the art and future directions},
  year = {2014},
  journal = {International Journal of Intelligent Systems},
  volume = {29},
  number = {6},
  pages = {495-524},
  publisher = {Wiley},
  url = {http://onlinelibrary.wiley.com/doi/10.1002/int.21654/pdf},
  note = {<p>Edited By: Ronald R. Yager Impact Factor: 1.416 ISI Journal Citation Reports \textcopyright Ranking: 2012: 49/115 (Computer Science Artificial Intelligence)</p>},
}