Normative References

Bidi: Mark Davis; Unicode Bidirectional Algorithm, Unicode Standard Annex #9, 22 September 2009. (http://www.unicode.org/reports/tr9/)
Entities: David Carlisle and Patrick Ion (editors); XML Entity Definitions for Characters , W3C Recommendation 01 April 2010. (http://www.w3.org/TR/xml-entity-names/)
HTML4: Dave Raggett, Arnaud Le Hors, and Ian Jacobs (editors); HTML 4.01 Specification, W3C Recommendation, 24 December 1999. (http://www.w3.org/TR/html401/)
IRI: M. Duerst and M. Suignard; Internationalized Resource Identifiers (IRIs), January 2005 (http://www.ietf.org/rfc/rfc3987.txt). See also the proposed update http://tools.ietf.org/html/draft-duerst-iri-bis-07.
ISO10646: Joint Technical Committee ISO/IEC JTC 1, Subcommittee SC 2.
ISO/IEC 10646: 2003, Information technology -- Universal Multiple-Octet Coded Character Set (UCS)
. International Standards Organization, Geneva, Switzerland, 15 December 2003.
Namespaces: Tim Bray, Dave Hollander, Andrew Layman, Richard Tobin, and Henry S. Thompson (editors); Namespaces in XML, W3C Recommendation, 8 December 2009. (http://www.w3.org/TR/REC-xml-names/)
Normal: Mark Davis, Ken Whistler, and Martin Dürst; Unicode Normalization Forms, Unicode Standard Annex #15, 3 September 2009. (http://www.unicode.org/reports/tr15/)
OpenMath2004: S. Buswell, O. Caprotti, D. P. Carlisle, M. C. Dewar, M. Gaëtano and M. Kohlhase (editors); The OpenMath Standard Version 2.0, The OpenMath Society, 30 June 2004. (http://www.openmath.org/standard/om20-2004-06-30/)
RELAX-NG: ISO/IEC JTC 1/SC 34; Document Schema Definition Language (DSDL) -- Part 2: Regular-grammar-based validation -- RELAX NG 2008, International Organization for Standardization, 12 December 2002. (http://relaxng.org/spec-20011203.html)
RFC2045: N. Freed and N. Borenstein; Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies, RFC 2045, November 1996. (http://www.ietf.org/rfc/rfc2045.txt)
RFC2046: N. Freed and N. Borenstein; Multipurpose Internet Mail Extensions (MIME) Part Two: Media Types, RFC 2045, November 1996. (http://www.ietf.org/rfc/rfc2046.txt)
RFC3023: M. Murata, S. St.Laurent and D. Kohn; XML Media Types, RFC 3023, January 2001. (http://www.ietf.org/rfc/rfc3023.txt)
RFC3986: T. Berners-Lee, R. Fielding and L. Masinter; Uniform Resource Identifier (URI): Generic Syntax, RFC 3986, January 2005. (http://tools.ietf.org/html/rfc3986)
RFC4288: N. Freed and J. Klensin; Media Type Specifications and Registration Procedures, RFC 4288, December 2005. (http://www.ietf.org/rfc/rfc4288.txt)
Unicode: The Unicode Consortium. The Unicode Standard, Version 5.2.0, The Unicode Consortium, Mountain View, CA, 2009. ISBN 978-1-936213-00-9. (http://www.unicode.org/versions/Unicode5.2.0/)
XHTML: Steven Pemberton, et al.; XHTML™ 1.0 The Extensible HyperText Markup Language (Second Edition): A Reformulation of HTML 4 in XML 1.0, W3C Recommendation, 26 January 2000, revised 1 August 2002. (http://www.w3.org/TR/xhtml1/)
XML: Tim Bray, Jean Paoli, C. M. Sperberg-McQueen, Eve Maler, and François Yergeau (editors); Extensible Markup Language (XML) 1.0 (Fifth Edition), W3C Recommendation, 26 November 2008. (http://www.w3.org/TR/xml/)
xCSS21: Bert Bos, Tantek Çelik, Ian Hickson, and Håkon Wium Lie (editors); Cascading Style Sheets Level 2 Revision 1 (CSS 2.1) Specification, W3C Candidate Recommendation, 8 September 2009. (http://www.w3.org/TR/CSS21/)

G Normative References