9. References

1. Rigney, C., "RADIUS Accounting", RFC 2139, April 1997.

2. Rigney, C., Willens, S., Rubens, A. and W. Simpson, "Remote Authentication Dial In User Service (RADIUS)", RFC 2865, June 2000.

3. Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March, 1997.

4. Postel, J., "User Datagram Protocol", STD 6, RFC 768, August 1980.

5. Rivest, R. and S. Dusse, "The MD5 Message-Digest Algorithm", RFC 1321, April 1992.

6. Reynolds, J. and J. Postel, "Assigned Numbers", STD 2, RFC 1700, October 1994.

7. Yergeau, F., "UTF-8, a transformation format of ISO 10646", RFC 2279, January 1998.

8. Alvestrand, H. and T. Narten, "Guidelines for Writing an IANA Considerations Section in RFCs", BCP 26, RFC 2434, October 1998.