1. Gustavo Alonso, Fabio Casati, Harumi Kuno: Web Services: Concepts, Architectures and Applications and Springer publications, 2003, 124--130
2. Sanjiva Weerawarana, Francisco Curbera, ony Storey: Web Services Platform Architecture: SOAP, WSDL, WS-Policy, WS-Addressing, WS-BPEL, WS-Reliable Messaging and O'Reilly Publications, 2005
3. William Stallings: Cryptography and Network Security, 5th Edition and Prentice Hall India
4. www.livehacking.com
5. http://www.cnet.com/news/the-unvarnished-truth-about-unsecured-wi-fi