@book{ verdegay_interface_1989,
  title = {{The interface between artificial intelligence and operations research in fuzzy environment}},
  author = {Verdegay, Jose-Luis and Delgado, Dr Miguel},
  editor = {Rheinland, Verlag TÜV},
  publisher = {Verlag \{TÜV\} Rheinland},
  year = {1989}
}