- General Overview of Addressing Issues on the Web
- http://www.w3.org/hypertext/WWW/Addressing/Addressing.html
- URI Specification, in HTML Format
-
http://www.w3.org/hypertext/WWW/Addressing/URL/URI_Overview.html
- URI Specification (RFC 1630)
- ftp://ds.internic.net/rfc/1630.txt
- URL Specification (RFC 1738)
- http://www.w3.org/hypertext/WWW/Addressing/rfc1738.txt
- ftp://ds.internic.net/rfc/rfc1738.txt
- Relative URL Specification (RFC 1808)
- http://www.w3.org/hypertext/WWW/Addressing/rfc1808.txt
- ftp://ds.internic.net/rfc/rfc1808.txt
- URNs: The PATH Specification
- http://union.ncsa.uiuc.edu/~liberte/www/path.html
- URCs: Uniform Resource Characteristics
- http://union.ncsa.uiuc.edu/HyperNews/get/www/URCs.html
- http://www.acl.lanl.gov/URI/ExtRep/urc0.html
- Electronic Mail/ARPA Internet Text Messages Specification (RFC 822)
- ftp://ds.internic.net/rfc/rfc822.txt
- Standard for Interchange of USENET Messages (RFC 1036)
- ftp://ds.internic.net/rfc/rfc1036.txt
- Network News Transfer Protocol Specification (RFC 977)
- ftp://ds.internic.net/rfc/rfc977.txt