@article{1404450,
      author = {Feenstra, Robert C.},
      url = {http://library.usi.edu/record/1404450},
      title = {Product variety and the gains from international trade /},
      publisher = {MIT Press,},
      recid = {1404450},
      pages = {1 online resource (133 pages) :},
      address = {Cambridge, Mass. :},
      year = {2010},
}