@article{tp3380,
  title = {Hesitant Fuzzy Sets: State of the Art and Future Directions},
  author = {Rosa M. Rodriguez and Luis Martínez and V. Torra and Z. S. Xu and F. Herrera},
  year = {2014},
  journal = {INTERNATIONAL JOURNAL OF IN℡LIGENT SYSTEMS},
  volume = {29},
  pages = {495–524},
  doi = {10.1002/int.21654},
  isbn = {0884-8173},
  keywords = {article},
}