@article{47,
  author = {Rafael Alcalá and José Ramón Cano De Amo and Óscar Cordón García and Francisco Herrera Triguero and P. Villar and I. Zwir},
  title = {Linguistic Modeling with Hierarchical Systems of Weighted Linguistic Rules},
  year = {2003},
  journal = {International Journal of Approximate Reasoning},
  volume = {32},
  number = {2-3},
  pages = {187-215},
}