参考资料

• 《 可 扩 充 标 示 语 言 结 构 描 述 设 计 及 管 理 指 引 》
  

• Representation Terms 和 Primitive Data Types 之 间 的 交 互 参 照 (英 文 版)
  

• ISO 11179 Information Technology -- Specification and Standardization of Data Elements
  (ISO has put some ISO standard documentation (including ISO/IEC 11179) freely available at the following URL http://standards.iso.org/ittf/PubliclyAvailableStandards/index.html)
  

• Universal Business Language (UBL), www.oasis-open.org
  

• Core Components Technical Specification (CCTS)
  UN/CEFACT Techniques and Methodologies Group (TMG), www.untmg.org