13. 规范性参考文献 (Normative References)
[RFC2119]
Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997.
说明: 本 RFC 定义了 RFC 文档中用于表示需求级别的关键词解释, 例如 MUST, SHOULD 和 MAY.
[ISO.10646]
International Organization for Standardization, "Information Technology - Universal Multiple-octet coded Character Set (UCS)", ISO/IEC Standard 10646, 包含:
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ISO/IEC 10646-1:2000, "Information technology -- Universal Multiple-Octet Coded Character Set (UCS) -- Part 1: Architecture and Basic Multilingual Plane"
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ISO/IEC 10646-2:2001, "Information technology -- Universal Multiple-Octet Coded Character Set (UCS) -- Part 2: Supplementary Planes"
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ISO/IEC 10646-1:2000/Amd 1:2002, "Mathematical symbols and other characters"
说明: ISO/IEC 10646 标准定义了通用字符集 (Universal Character Set, UCS). 该字符集与 Unicode 保持同步, 并为 UTF-8 提供字符集 (character repertoire).
[UNICODE]
The Unicode Consortium, "The Unicode Standard -- Version 4.0", defined by The Unicode Standard, Version 4.0 (Boston, MA, Addison-Wesley, 2003. ISBN 0-321-18578-1), April 2003, \http://www.unicode.org/unicode/standard/versions/enumeratedversions.html#Unicode_4_0_0\``.
说明: Unicode Standard 是 UTF-8 编码规则和字符属性的权威来源. 它由 The Unicode Consortium 维护, 并提供关于字符编码的完整文档.