?url_ver=Z39.88-2004&rft_id=10.1109%2FSITIS.2012.118&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Picciolo%2C+Francesco&rft.aulast=Picciolo&rft.aufirst=Francesco&rft.btitle=8th+International+Conference+on+Signal+Image+Technology+and+Internet+Based+Systems+(SITIS)%2C+2012&rft.title=The+Role+of+Distances+in+the+World+Trade+Web&rft.isbn=978-1-4673-5152-2&rft.date=November+2012&rft.genre=proceeding