URI共通構文（9）

   [RFC2277] Alvestrand, H., "IETF Policy on Character Sets and
             Languages", BCP 18, RFC 2277, January 1998.

   [RFC1630] Berners-Lee, T., "Universal Resource Identifiers in WWW: A
             Unifying Syntax for the Expression of Names and Addresses
             of Objects on the Network as used in the World-Wide Web",
             RFC 1630, June 1994.

   [RFC1738] Berners-Lee, T., Masinter, L., and M. McCahill, Editors,
             "Uniform Resource Locators (URL)", RFC 1738, December 1994.

   [RFC1866] Berners-Lee T., and D. Connolly, "HyperText Markup Language
             Specification -- 2.0", RFC 1866, November 1995.

   [RFC1123] Braden, R., Editor, "Requirements for Internet Hosts --
             Application and Support", STD 3, RFC 1123, October 1989.

   [RFC822]  Crocker, D., "Standard for the Format of ARPA Internet Text
             Messages", STD 11, RFC 822, August 1982.

   [RFC1808] Fielding, R., "Relative Uniform Resource Locators", RFC
             1808, June 1995.

   [RFC2046] Freed, N., and N. Borenstein, "Multipurpose Internet Mail
             Extensions (MIME) Part Two: Media Types", RFC 2046,
             November 1996.

   [RFC1736] Kunze, J., "Functional Recommendations for Internet
             Resource Locators", RFC 1736, February 1995.

   [RFC2141] Moats, R., "URN Syntax", RFC 2141, May 1997.

   [RFC1034] Mockapetris, P., "Domain Names - Concepts and Facilities",
             STD 13, RFC 1034, November 1987.

   [RFC2110] Palme, J., and A. Hopmann, "MIME E-mail Encapsulation of
             Aggregate Documents, such as HTML (MHTML)", RFC 2110, March
             1997.

   [RFC1737] Sollins, K., and L. Masinter, "Functional Requirements for
             Uniform Resource Names", RFC 1737, December 1994.

   [ASCII]   US-ASCII. "Coded Character Set -- 7-bit American Standard
             Code for Information Interchange", ANSI X3.4-1986.

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