N. Freed; J. Postel. <a href="http://www.ietf.org/rfc/rfc2978.txt"><cite>IANA Charset Registration Procedures.</cite></a> October 2000. Internet RFC 2978. URL: <a href="http://www.ietf.org/rfc/rfc2978.txt">http://www.ietf.org/rfc/rfc2978.txt</a>