@article{389526,
      author = {Fujita, Masahisa. and Krugman, Paul R. and Venables,  Anthony.},
      url = {http://library.usi.edu/record/389526},
      title = {The spatial economy: cities, regions and international  trade /},
      publisher = {MIT Press,},
      recid = {389526},
      pages = {xiii, 367 p. :},
      address = {Cambridge, MA :},
      year = {1999},
}