Normative references
- [RFC 2119]
- Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997,
<http://www.rfc-editor.org/info/rfc2119>.
- [RFC 3986]
- Berners-Lee, T., Fielding, R., and L. Masinter, "Uniform
Resource Identifier (URI): Generic Syntax", STD 66, RFC 3986, DOI
10.17487/RFC3986, January 2005, <http://www.rfc-editor.org/info/rfc3986>.
- [RFC 5646]
- Phillips, A., Ed., and M. Davis, Ed., "Tags for
Identifying Languages", BCP 47, RFC 5646, DOI 10.17487/RFC5646, September 2009,
<http://www.rfc-editor.org/info/rfc5646>.
- [XML 1.0]
- Extensible Markup
Language (XML) 1.0 (Fifth Edition), T. Bray, J. Paoli, M. , E. Maler, F. Yergeau,
Editors, W3C Recommendation, 26 November 2008, http://www.w3.org/TR/2008/REC-xml-20081126/ . Latest version available at
http://www.w3.org/TR/xml .
- [XML 1.1]
- Extensible
Markup Language (XML) 1.1 (Second Edition), T. Bray, J. Paoli, M. , E. Maler, F.
Yergeau, J. Cowan, Editors, W3C Recommendation, 16 August 2006,
http://www.w3.org/TR/2006/REC-xml11-20060816/ . Latest version available at http://www.w3.org/TR/xml11/ .