@revista_internacional{325,
  author = {Francisco Herrera and Luis Martínez and Vicenç c Torra and Z.S Xu},
  title = {Hesitant Fuzzy Sets: An emerging Tool in Decision Making},
  year = {2014},
  journal = {International Journal of Intelligent Systems},
  volume = {29},
  number = {6},
  pages = {493-494},
  publisher = {Wiley},
  url = {http://onlinelibrary.wiley.com/doi/10.1002/int.2014.29.issue-6/issuetoc},
}