1. Normative references
  2. Informative references

Normative references 

"Cascading Style Sheets, level 1", H. W. Lie and B. Bos, 17 December 1996.
Available at
"Date and Time Formats", W3C Note, M. Wolf and C. Wicksteed, 15 September 1997.
Available at
"Assigned Numbers", STD 2, RFC 1700, USC/ISI, J. Reynolds and J. Postel, October 1994.
Available at
"Codes for the representation of names of languages", ISO 639:1988.
For more information, consult
See also
"Codes for the representation of names of countries", ISO 3166:1993.
"Data elements and interchange formats -- Information interchange -- Representation of dates and times", ISO 8601:1988.
"Information Processing -- Text and Office Systems -- Standard Generalized Markup Language (SGML)", ISO 8879:1986.
Please consult for information about the standard.
"Information Technology -- Universal Multiple-Octet Coded Character Set (UCS) -- Part 1: Architecture and Basic Multilingual Plane", ISO/IEC 10646-1:1993. The current specification also takes into consideration the first five amendments to ISO/IEC 10646-1:1993.
"Information Processing -- 8-bit single-byte coded graphic character sets -- Part 1: Latin alphabet No. 1", ISO 8859-1:1987.
List of registered content types (MIME types). Download a list of registered content types from
"Hebrew Character Encoding for Internet Messages", H. Nussbacher and Y. Bourvine, December 1993.
Available at
"Handling of Bi-directional Texts in MIME", H. Nussbacher, December 1993.
Available at
"Uniform Resource Locators", T. Berners-Lee, L. Masinter, and M. McCahill, December 1994.
Available at
"Tags for the Identification of Languages", H. Alvestrand, March 1995.
Available at
"Relative Uniform Resource Locators", R. Fielding, June 1995.
Available at
"UTF-8, a transformation format of Unicode and ISO 10646", F. Yergeau, October 1996.
Available at
"Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies", N. Freed and N. Borenstein, November 1996.
Available at Note that this RFC obsoletes RFC1521, RFC1522, and RFC1590.
"Multipurpose Internet Mail Extensions (MIME) Part Two: Media Types", N. Freed and N. Borenstein, November 1996.
Available at Note that this RFC obsoletes RFC1521, RFC1522, and RFC1590.
"HTTP Version 1.1 ", R. Fielding, J. Gettys, J. Mogul, H. Frystyk Nielsen, and T. Berners-Lee, January 1997.
Available at
"Key words for use in RFCs to Indicate Requirement Levels", S. Bradner, March 1997.
Available at
"URN Syntax", R. Moats, May 1997.
Available at
"A Standard Default color Space for the Internet", version 1.10, M. Stokes, M. Anderson, S. Chandrasekar, and R. Motta, 5 November 1996.
Available at
"The Unicode Standard: Version 2.0", The Unicode Consortium, Addison-Wesley Developers Press, 1996. The specification also takes into consideration the corrigenda at
For more information, consult the Unicode Consortium's home page at
"Uniform Resource Identifiers (URI): Generic Syntax and Semantics", T. Berners-Lee, R. Fielding, L. Masinter, 18 November 1997.
Available at This is a work in progress that is expected to update [RFC1738] and [RFC1808].
"Proposed TC for WebSGML Adaptations for SGML", C. F. Goldfarb, ed., 14 June 1997.
Available at

Informative references 

"SGML: An Author's Guide to the Standard Generalized Markup Language", M. Bryan, Addison-Wesley Publishing Co., 1988.
Continuous Acquisition and Life-Cycle Support (CALS). CALS is a Department of Defense strategy for achieving effective creation, exchange, and use of digital data for weapon systems and equipment. More information can be found on the CALS home page at
Registered charset values. Download a list of registered charset values from
"Cascading Style Sheets, level 2", B. Bos, H. W. Lie, C. Lilley, and I. Jacobs, November 1997.
Available at
The Dublin Core: for more information see
"Ethnologue, Languages of the World", 12th Edition, Barbara F. Grimes editor, Summer Institute of Linguistics, October 1992.
"The SGML Handbook", C. F. Goldfarb, Clarendon Press, 1991.
"HyperText Markup Language Specification Version 3.0", Dave Raggett, September 1995.
Available at
"HTML 3.2 Reference Specification", Dave Raggett, 14 January 1997.
Available at
"HTML and Style Sheets", B. Bos, D. Raggett, and H. Lie, 24 March 1997.
Available at
"A Lexical Analyzer for HTML and Basic SGML", D. Connolly, 15 June 1996. Available at
Platform for Internet Content (PICS). For more information see
The Resource Description Language: for more information see
"Standard for the Format of ARPA Internet Text Messages", Revised by David H. Crocker, August 1982.
Available at
"Standard for Interchange of USENET Messages", M. Horton, June 1983.
Available at
"Japanese Character Encoding for Internet Messages", J. Murai, M. Crispin, and E. van der Poel, June 1993.
Available at
"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", T. Berners-Lee, June 1994.
Available at
"HyperText Markup Language 2.0", T. Berners-Lee and D. Connolly, November 1995.
Available at
"Form-based File Upload in HTML", E. Nebel and L. Masinter, November 1995.
Available at RFC1867 is expected to be updated by, currently a work in progress.
"HTML Tables", Dave Raggett, May 1996.
Available at
"Multipurpose Internet Mail Extensions (MIME) Part Four: Registration Procedures", N. Freed, J. Klensin, and J. Postel, November 1996.
Available at Note that this RFC obsoletes RFC1521, RFC1522, and RFC1590.
"Internationalization of the HyperText Markup Language", F. Yergeau, G. Nicol, G. Adams, and M. Dürst, January 1997.
Available at
The SGML Consortium. Consult the home page of the SGML Consortium at
SP is a public domain SGML parser.
Available at Further information is available at
"The SGML Primer", 3rd Edition, SoftQuad Inc., 1991.
"Multilingual Information Exchange through the World-Wide Web", Toshihiro Takada, Computer Networks and ISDN Systems, Vol. 27, No. 2, pp. 235-241, November 1994.
Guidelines for designing accessible HTML documents are available at the Web Accessibility Initiative (WAI) Web site:
"Practical SGML", E. van Herwijnen, Kluwer Academic Publishers Group, Norwell and Dordrecht, 1990.