[1] [CITE[WWW-HTML Apr-Jun 1995: Re: Extraneous Characters in Netscape Display]] ([TIME[2009-02-20 05:33:20 +09:00]] 版) <http://1997.webhistory.org/www.lists/www-html.1995q2/0379.html>

[2] [CITE[Bug 9280 - Quirksmode: Trailing ''']'''> from internal DTD subset is rendered as body text]] ([TIME[2009-02-20 05:18:34 +09:00]] 版) <https://bugs.webkit.org/show_bug.cgi?id=9280>

[3] [[XHTML + MathML]]