RFC 2369: The Use of URLs as Meta-Syntax for Core ...
RFC-Ref

9. References

[RFC822] Crocker, D., "Standard for the Format of ARPA Internet Text Messages", STD 11, RFC 822std11(-> 2822prop), August 1982.
[RFC1738] Berners-Lee, T., Masinter, L., and M. McCahill, "Uniform Resource Locators (URL)" RFC 1738(-> 4266prop | 4248prop), December 1994.
[RFC2142] Crocker, D., "Mailbox Names for Common Services, Roles and Functions", RFC 2142prop, May 1997.
[RFC2368] Hoffman, P., Masinter, L., and J. Zawinski, "The mailto URL scheme", RFC 2368prop, July 1998.
[5] "List-Header" Mail list. list-header@list.nisto.com <URL:http://www.nisto.com/listspec/mail/> <URL:http://www.nisto.com/listspec/>
[6] "ListMom-Talk" Mail list. listmom-talk@skyweyr.com <URL:http://cgi.skyweyr.com/ListMom.Home>

Google
Web
RFC-Ref