@incollection{27,
  title = {A linguistic hierarchical evaluation model for engineering systems},
  author = {Luis Martínez and Luis Gonzaga Pérez and Jun Liu and J. B Yang and Francisco Herrera},
  year = {2006},
  publisher = {Elsevier},
  pages = {295-305},
  url = {http://www.elsevier.com/wps/find/bookdescription.cws_home/707741/description$#$description},
  keywords = {incollection},
}