1. Conklin, A., Dietrich, G., Walz, D.: Password-based authentication: a system perspective. In: Proceedings of the 37th Annual Hawaii International Conference on System Sciences (HICSS 04)–Track 7, p. 70170b. IEEE Computer Society, Los Alamitos (2004)
2. Lecture Notes in Computer Science;C. Herley,2009
3. De Luca, M.: Password Management for Distributed Environments. VDM Verlag, Saarbrücken (2008)
4. Jones, M.B.: A Guide to Using the Identity Selector Interoperability Profile V1.5 within Web Applications and Browsers. Microsoft Corporation (2008)
5. Bertocci, V., Serack, G., Baker, C.: Understanding Windows CardSpace: An Introduction to the Concepts and Challenges of Digital Identities. Addison-Wesley, Reading (2008)