[1] [CITE@en-GB-hixie[Web Controls 1.0]]
([TIME[2004-11-09 08:49:52 +09:00]] 版)
<http://www.whatwg.org/specs/web-controls/current-work/#focus>

[2] [CITE@en[CSS3 module: Basic User Interface]]
( ([[Tantek Çelik]] 著, [TIME[2002-08-03 07:13:43 +09:00]] 版))
<http://www.w3.org/TR/2002/WD-css3-ui-20020802/#nav-index>

[3] [CITE@en[CSS3 Basic User Interface Module]]
( ([[Tantek Çelik]] 著, [TIME[2003-07-04 02:51:33 +09:00]] 版))
<http://www.w3.org/TR/2003/WD-css3-ui-20030703/#nav-index>

[4] [CITE@en[CSS3 Basic User Interface Module]]
( ([[Tantek Çelik]] 著, [TIME[2004-05-12 02:17:47 +09:00]] 版))
<http://www.w3.org/TR/2004/CR-css3-ui-20040511/#nav-index>

[5] [CITE@en[CSS Basic User Interface Module Level 3 (CSS3 UI)]]
( ([[Tantek Çelik]] 著, [TIME[2011-09-29 17:32:08 +09:00]] 版))
<http://dev.w3.org/csswg/css3-ui/#nav-index>

[6] [CITE@en-GB-hixie[Web Controls 1.0]]
( ([TIME[2004-11-09 08:49:52 +09:00]] 版))
<http://www.whatwg.org/specs/web-controls/current-work/#focus>

[7] [CITE@en-GB-hixie[Web Applications Markup Language 1.0]]
( ([TIME[2004-04-08 02:39:12 +09:00]] 版))
<http://hixie.ch/specs/html/apps/web-apps-1#focus>

[8] [CITE@en[CSS Basic User Interface Module Level 3 (CSS3 UI)]]
( ([[Tantek Çelik]] 著, [TIME[2012-01-13 20:03:30 +09:00]] 版))
<http://www.w3.org/TR/2012/WD-css3-ui-20120117/#nav-index>

[9] [CITE@en-US[XML Binding Language (XBL) 2.0]]
( ([TIME[2007-03-16 22:20:16 +09:00]] 版))
<http://www.w3.org/TR/2007/CR-xbl-20070316/#the-focus>

[10] [CITE[IRC logs: freenode / #whatwg / 20140225]]
( ([TIME[2014-02-27 00:09:37 +09:00]] 版))
<http://krijnhoetmer.nl/irc-logs/whatwg/20140225>

[11] [CITE@en-US[csswg: changeset 14966:d176479b88ff]]
( ([TIME[2014-12-25 13:48:50 +09:00]] 版))
<https://dvcs.w3.org/hg/csswg/rev/d176479b88ffe2dcfa027be6aee807afc0d45bd2>

[12] [CITE@en[nav-index may move to CSS4 UI]]
( ([[Chris Lilley]] 著, [TIME[2014-11-19 20:03:41 +09:00]] 版))
<http://lists.w3.org/Archives/Public/public-svg-wg/2014OctDec/0063.html>