?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Sturr%2C+Natalie&rft.aufirst=Natalie&rft.aulast=Sturr&rft.date=6+November+2009&rft.title=Creating+Custom+Services+in+Aleph&rft.genre=proceeding