?url_ver=Z39.88-2004&rft_id=10.1109%2FICIME.2009.83&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aulast=Elshiekh&rft.au=Elshiekh%2C+A.A.&rft.aufirst=A.A.&rft.isbn=9780769535951&rft.title=Three+audit+stages+for+securing+statistical+databases&rft.date=2009&rft.genre=proceeding