?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Hearn%2C+Stephen&rft.aulast=Hearn&rft.aufirst=Stephen&rft.date=October+2009&rft.title=ALEPH-Assisted+Heading+Management&rft.genre=proceeding