?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=Mark&rft.aulast=Dehmlow&rft.au=Dehmlow%2C+Mark&rft.title=Expanding+the+Reach+of+SFX%3A+How+to+Choose+and+Build+Custom+Extensions+for+SFX&rft.date=31+July+2008&rft.genre=proceeding