1. InteliGrid project: Interoperability of Virtual Organizations on a Complex Semantic Grid homepage. http://www.inteligrid.com.
2. Open Grid Services Architecture—Data Access and Integration (OGSA-DAI) Project homepage. http://www.ogsadai.org.uk/.
3. Internet X.509 Public Key Infrastructure (PKI) Proxy Certificate Profile. Request for Comments 3820. Available at: ftp://ftp.rfc-editor.org/in-notes/rfc3820.txt.
4. (eds.). The Globus Toolkit. The Grid: Blueprint for a New Computing Infrastructure. Morgan Kaufmann: San Francisco, CA, 1999; 259–278.
5. OASIS WS-Security specification. http://www.oasis-open.org/committees/wss/.