[1] [CITE[Bug 11731 – Replace <hgroup> element with a <subhead> element used as the child of the <hx> element]]
( ([TIME[2011-03-03 08:06:48 +09:00]] 版))
<http://www.w3.org/Bugs/Public/show_bug.cgi?id=11731>

[2] [CITE@en[Web Applications 1.0 r6052 remove <hgroup> from the w3c spec by request of steven faulkner]]
( ([TIME[2011-05-04 04:37:00 +09:00]] 版))
<http://html5.org/tools/web-apps-tracker?from=6051&to=6052>

[3] [CITE@en[Web Applications 1.0 r6064 revert change per http://lists.w3.org/Archives/Public/public-html/2011May/0061.html]]
( ([TIME[2011-05-05 05:21:00 +09:00]] 版))
<http://html5.org/tools/web-apps-tracker?from=6063&to=6064>

[4] [CITE[IRC logs: freenode / #whatwg / 20110504]]
( ([TIME[2011-05-07 12:34:23 +09:00]] 版))
<http://krijnhoetmer.nl/irc-logs/whatwg/20110504>

[5] [CITE@en[Web Applications 1.0 r7234  Let tools decide how to render <hgroup>s in ToCs and so on.]]
( ([TIME[2012-08-10 03:00:00 +09:00]] 版))
<http://html5.org/tools/web-apps-tracker?from=7233&to=7234>

[6] [CITE[IRC logs: freenode / #whatwg / 20121004]]
( ([TIME[2012-10-08 21:14:21 +09:00]] 版))
<http://krijnhoetmer.nl/irc-logs/whatwg/20121004>

[7] [CITE[IRC logs: freenode / #whatwg / 20121207]]
( ([TIME[2012-12-16 15:20:55 +09:00]] 版))
<http://krijnhoetmer.nl/irc-logs/whatwg/20121207#l-387>

[8] [CITE@en[Web Applications 1.0 r7616     Add support for automatic sizing of headings in <hgroup> if they follow <h1>.]]
( ([TIME[2012-12-31 05:03:00 +09:00]] 版))
<http://html5.org/tools/web-apps-tracker?from=7615&to=7616>

[9] [CITE@en[WG Decision on request to drop hgroup from HTML5]]
( ([[Paul Cotton]] 著, [TIME[2013-04-02 09:53:01 +09:00]] 版))
<http://lists.w3.org/Archives/Public/public-html-admin/2013Apr/0003.html>

[10] [CITE[IRC logs: freenode / #whatwg / 20130402]]
( ([TIME[2013-04-05 21:22:48 +09:00]] 版))
<http://krijnhoetmer.nl/irc-logs/whatwg/20130402#l-269>

[11] [CITE[IRC logs: freenode / #whatwg / 20130403]]
( ([TIME[2013-04-05 22:12:04 +09:00]] 版))
<http://krijnhoetmer.nl/irc-logs/whatwg/20130403>

[12] [CITE@en-US-x-Hixie[4.13 Common idioms without dedicated elements — HTML 5.1 Nightly]]
( ([TIME[2013-05-28 23:24:52 +09:00]] 版))
<http://www.w3.org/html/wg/drafts/html/master/common-idioms.html#sub-head>

[13] [CITE[IRC logs: freenode / #whatwg / 20130529]]
( ([TIME[2013-05-30 20:48:40 +09:00]] 版))
<http://krijnhoetmer.nl/irc-logs/whatwg/20130529>

[14] [CITE[IRC logs: freenode / #whatwg / 20130604]]
( ([TIME[2013-06-06 22:25:38 +09:00]] 版))
<http://krijnhoetmer.nl/irc-logs/whatwg/20130604#l-78>

[15] [CITE[IRC logs: freenode / #whatwg / 20130904]]
( ([TIME[2013-09-07 21:57:35 +09:00]] 版))
<http://krijnhoetmer.nl/irc-logs/whatwg/20130904#l-891>