1. Consortium available atwww org;World Wide Web
2. Beautiful Clouds available atwww wordle net;Feinberg;Word
3. RFC Uniform Resource URI Generic Syntax;Berners,2005
4. Beautiful Clouds available atwww wordle net;Feinberg;Word
5. Wikipedia the free encyclopedia book available athttp en wikipedia org wiki IUPAC book;IUPAC