@inproceedings{tp3566,
  title = {Optimizing the Method for Building an Extended Linguistic Hierarchy},
  author = {Macarena Espinilla and Rosa M. Rodriguez and Luis Martínez and Francisco Mata and Jun Liu},
  year = {2009},
  publisher = {ISDA 09. Ninth International Conference on Intelligent Systems Design and Applications},
  volume = {2009},
  pages = {815-820},
  keywords = {congreso_internacional},
}