[1]
[CITE[Emacs-w3 User's Manual - Supported Markup Languages]] ([TIME[1996-01-22 06:02:45 +09:00]] 版) <http://www.informatik.uni-hamburg.de/RZ/software/emacs/w3/w3_2.html#SEC6>

[2] [CITE@EN[W3C XML Schema Definition Language (XSD) 1.1 Part 2: Datatypes]]
( ([TIME[2012-04-05 06:34:51 +09:00]] 版))
<http://www.w3.org/TR/2012/REC-xmlschema11-2-20120405/#ENTITY>