?url_ver=Z39.88-2004&rft_id=10.1109%2FICIMU.2011.6122770&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=Z.A.&rft.aulast=Khattak&rft.au=Khattak%2C+Z.A.&rft.isbn=9781457709890&rft.title=Security%2C+Trust+and+Privacy+(STP)+framework+for+federated+single+sign-on+environment&rft.date=2011&rft.genre=proceeding