@congreso_internacional{487,
  author = {Rocío de Andrés and Macarena Espinilla and Rosa María Rodríguez and Luis Martínez},
  title = {Performance Appraisal with Multiple Linguistic Scales},
  year = {2009},
  volume = {2},
  pages = {433-438},
  month = {November 27-28th},
  publisher = {The 4th International Conference on Intelligent System and Knowledge Engineering (ISKE 2009)},
  address = {University of Hasselt, Hasselt (Belgium)},
}