1. [1] For the recent information on WWW, see the homepage of the World Wide Web consortium (W3C) (http://www.w3.org/).
2. [2] C. H. Davis and J. E. Rush, "Information Retrieval and Documentation in Chemistry," Greenwood, Westport, 1974.
3. A Chemical Structure Storage and Search System Developed at Du Pont.
4. Chemical Markup, XML, and the Worldwide Web. 1. Basic Principles
5. [5] The word 'XyM' (TeX as the formal logo) is an uppercase form of the stem.