?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=Maccabee&rft.aulast=Levine&rft.au=Levine%2C+Maccabee&rft.title=Virtual+Shelf+Browsing%3A+Enhancing+Voyager+with+the+Related+Items+Bookshelf&rft.date=May+2011&rft.genre=proceeding