?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Perry%2C+Andy&rft.aufirst=Andy&rft.aulast=Perry&rft.date=2004&rft.title=Tales+of+Upgrade+Express+and+the+Aleph+16+Upgrade&rft.genre=proceeding