[1] IRC logs: freenode / #whatwg / 20110602 ( (2011-06-04 12:37:09 +09:00 版)) <http://krijnhoetmer.nl/irc-logs/whatwg/20110602>

[2] Define Element.prototype.matches() · 138a7d3 · whatwg/dom (2013-09-13 07:36:51 +09:00 版) <https://github.com/whatwg/dom/commit/138a7d3cf4ac9455e14afb8f21224a94ab07c950>

[3] Spec Element.webkitMatchesSelector() · Issue #3 · whatwg/compat (2015-10-20 15:04:49 +09:00 版) <https://github.com/whatwg/compat/issues/3>

[4] Add webkitMatchesSelector() 😢 · whatwg/dom@9ac9c15 (2015-10-20 15:04:56 +09:00 版) <https://github.com/whatwg/dom/commit/9ac9c1548661a309c15168d71e6fb6af92d4d610>

[5] Add webkitMatchesSelector() 😢 · whatwg/dom@9ac9c15 (2015-10-20 15:10:14 +09:00 版) <https://github.com/whatwg/dom/commit/9ac9c1548661a309c15168d71e6fb6af92d4d610>

[6] IRC logs: freenode / #whatwg / 20151102 (2015-11-03 11:41:10 +09:00 版) <http://krijnhoetmer.nl/irc-logs/whatwg/20151102>

[7] Do not throw for query() and queryAll() · Issue #39 · whatwg/dom (2018-03-15 16:14:18 +09:00) <https://github.com/whatwg/dom/issues/39>